Name: 30-Minute Sheet Pan Salmon Fajitas
Prep time: 10 min
Cook time: 20 min
Total time: 30 min
Cuisine: Mexican
Ingredients: 1/2 tablespoon chili powder; 1 teaspoon cumin; 1 teaspoon paprika; 1/4 teaspoon garlic powder; 1/4 teaspoon onion powder; 1/2 teaspoon salt; 1/8 teaspoon cayenne powder; 2 tablespoons olive oil; 1 red bell pepper, stemmed, seeded and sliced (about 1 cup); 1 green bell pepper, stemmed, seeded and sliced (about 1 cup); 1 yellow bell pepper, stemmed, seeded and sliced (about 1 cup); 1 medium onion, sliced (about 2 cups); 1 lb. salmon; Corn tortillas; Sliced avocado or guacamole; Pico de gallo; Cojita cheese; Cilantro; Limes; Avocado lime crema

Jump to Recipe

Ready in just 30 minutes, these salmon fajitas are a quick weeknight sheet pan dinner. Roasting the peppers, onions and salmon all on one pan makes for easy, minimal clean up. An easy homemade spice mix makes the salmon and veggies packed with flavor.

two plates with two salmon fajitas with avocado, salmon, peppers and lime. Baking sheet with ingredients on it behind plates.

Why I like this recipe!

A nutrient dense meal ready to serve in just in 30 minutes! Need I say more?!

That’s right – these salmon fajitas come together in just 30 minutes. Enjoy this dinner on a weeknight when you’re craving something satisfying but don’t have a ton of time to spare.

And if you’ve been around here for a while, you know I love finding different ways to incorporate salmon into my meals like my Spicy Salmon and Avocado Poke Bowl and my Blackened Salmon Pasta.

I also love this recipe because it’s so practical. These quick salmon fajitas are made using a single sheet pan, making your life much easier!

It’s also super customizable, so add your favorite veggies, focus on those in season, or play with different seasonings. Regardless, it’s an easy way to get creative with flavors and impress a crowd with minimal cleanup.

As a registered dietitian, I choose meals that are well balanced and most importantly taste good – these sheet pan fajitas provide just that: a great source of omega-3s, protein, and colorful veggies.

Ingredients You’ll Need

ingredients for sheet pan salmon fajitas laid on marble surface with black text overlay for each

Notes on ingredients:

salmon: soft, flaky, flavorful and versatile fish that pairs well with a variety of veggies and seasonings.

bell peppers: give a nice crunch and pop of color.

onion: adds aromatic flavor.

salt: enhances the flavors.

cayenne powder: add a fiery kick to dishes.

paprika: adds a mild, sweet flavor and fruity notes to dishes.

cumin: adds a nutty, peppery, and smoky aroma that accentuates the sweetness of vegetables.

chili powder: adds pungency and flavor.

garlic powder: adds depth and savoriness to many dishes.

onion powder: enhances the flavor.

Salmon is a nutritious protein!

Salmon is a great source of lean protein and boasts healthy omega-3 fatty acids. Omega-3 fatty acids are helpful for heart, brain, and cardiovascular health and are found in high quantities in fatty fish like salmon.

Salmon is also a fantastic source of vitamin D, B-vitamins, selenium, potassium, and antioxidants.

How To Make Sheet Pan Salmon Fajitas

Fajita seasoning in small glass bowl on marble surface. Whisk on the right of the bowl.

Sliced raw peppers and onions with fajita seasoning on parchment lined sheet pan on marble counter.

Prepare baking sheet: Line a baking sheet with parchment paper and preheat oven to 400 degrees F.
Make fajita seasoning: In a small bowl, whisk chili powder, cumin, paprika, garlic powder, onion powder, salt and cayenne powder until combined.
Season vegetables: Add peppers and onions to the pan, drizzle with olive oil and sprinkle with 1 tablespoon spice mixture, then toss until evenly coated. Roast for 10 min.
Season salmon: Brush remaining spice mixture onto salmon.
Cook salmon: Add salmon to the center of the baking sheet and place back in the oven for 10-15 min.
Serve with toppings: Serve with tortillas and desired toppings like avocado/guacamole, pico de gallo, Cojita cheese, cilantro, and lime.

Equipment You’ll Need (affiliate links – if you make a purchase I receive a small commission)

baking sheet

small mixing bowl

Expert Tips!

Extra time savers: buy pre-made toppings like guac, salsa or even premade taco seasoning.
Use a meat thermometer to ensure perfectly cooked salmon. While cooking times will vary based on the thickness of your salmon fillets, using a meat thermometer is a foolproof way to ensure your salmon is cooked to the desired temperature. Insert the thermometer into the thickest part of the fillet and cook until the internal temperature reaches 125-135 degrees F for medium to medium-rare salmon or 145 degrees F for well-done salmon (USDA recommends cooking seafood until it reaches 145 degrees F to prevent food borne illness).
Cut your veggies into similar-sized pieces to ensure even cooking. When roasting vegetables, it’s important to cut them into similar-sized pieces so that they cook evenly. This will prevent some veggies from becoming overcooked while others are still undercooked.

Baked salmon and peppers and onions on baking sheet served with pico de gallo, cojita cheese, and cilantro

Storage and Preparation

Salmon fajita leftovers can be stored in an airtight container in the refrigerator for up to 3-4 days.

To reheat in the oven, preheat your oven to 350 degrees F, place the salmon and veggies on a baking sheet, and bake until heated through, about 10-15 minutes. To reheat in the microwave, reheat salmon and veggies for 30-60 seconds depending on the wattage of your microwave.

It’s important to note that reheated salmon can sometimes become dry or tough, so it’s best to reheat it gently and not to overcook it.

The fajita seasoning is easy to make and you can double or triple the batch to save leftovers for future use.

Recipes that Pair Well

The Best Mexican Street Corn Dip

Avocado Lime Crema

Vegetarian Nachos

two pieces of salmon, one flaked with a fork, on baking sheet with roasted peppers and onions and other fajita toppings

For more sheet pan cooking inspiration, check out my recipes below!

Sheet Pan Chicken Potatoes and Green Beans

Sheet Pan Salmon and Veggies

Roasted Potato Nachos (Sheet Pan)

Crispy Black Bean Sheet Pan Tacos

If you like this recipe, please be sure to comment and give it a 5 star rating below. If you make it, share it on Instagram and tag me @karalydonrd and I’ll re-share it with my followers! If you want to save this recipe for later, be sure to pin it on Pinterest!

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