Chicken, bell peppers, and onions roasted together on a sheet pan.
Tex-Mex

Sheet Pan Chicken Fajitas with Peppers and Onions

If you like fajitas but don’t want to stand at the stove juggling pans, try this sheet pan version. Everything cooks at once, cutting down on cleanup and hands-on time.

The Story Behind This Recipe

I started making sheet pan fajitas after getting tired of stirring chicken and vegetables over a hot skillet, always worried about overcooking one thing or another. Tossing everything on a sheet pan and letting the oven do the work feels like a much more relaxed way to get dinner done.

The beauty is in the simplicity: chicken, peppers, onions, and a basic seasoning blend. The high oven heat gives the edges a nice char while keeping the chicken juicy. I don’t bother with fancy marinades — just a quick toss with spices and some olive oil is enough.

I usually serve these with warm tortillas, some sour cream, and a squeeze of lime. It’s a crowd-pleaser when friends come over because it’s easy to double or triple the recipe. Plus, there’s very little cleanup beyond one pan and a cutting board, which is always a win in my book.

Sometimes I add a diced jalapeño or sprinkle with chopped fresh cilantro at the end, depending on the mood and what’s in the fridge. It’s a recipe I keep coming back to because it hits the right balance of flavor and ease every time.

Cuisine: Tex-Mex
Course: Dinner
Servings: 4
Prep time: 15 minutes
Cook time: 20 minutes
Total time: 35 minutes

Ingredients

  • 1 1/2 pounds boneless skinless chicken breasts or thighs, sliced into strips
  • 3 bell peppers (mixed colors), sliced
  • 1 large onion, sliced
  • 3 tablespoons olive oil
  • 1 tablespoon chili powder
  • 1 teaspoon ground cumin
  • 1 teaspoon smoked paprika
  • 1/2 teaspoon garlic powder
  • 1/2 teaspoon onion powder
  • 1/4 teaspoon salt
  • 1/4 teaspoon black pepper
  • Juice of 1 lime (optional)
  • Tortillas, for serving

Instructions

  1. Step 1. Preheat your oven to 425°F (220°C).
  2. Step 2. In a large bowl, combine olive oil, chili powder, cumin, smoked paprika, garlic powder, onion powder, salt, and pepper.
  3. Step 3. Add the sliced chicken, peppers, and onion to the bowl and toss everything together until well coated.
  4. Step 4. Spread the mixture out on a large rimmed baking sheet in an even layer.
  5. Step 5. Bake for 18 to 20 minutes, stirring halfway through, until the chicken is cooked through and vegetables are tender.
  6. Step 6. Remove from the oven and squeeze fresh lime juice over the top, if using.
  7. Step 7. Serve with warm tortillas and your favorite toppings.

Tips for Success

  • Slice the chicken and vegetables evenly to ensure everything cooks at the same rate.
  • If you want more char, broil for an extra 1-2 minutes at the end, watching closely.
  • Use chicken thighs if you prefer more juicy, flavorful meat.
  • Make sure to stir halfway through baking for even cooking and browning.
  • Add a sprinkle of fresh cilantro or chopped green onions for an extra fresh touch.

Variations & Substitutions

  • Swap out the bell peppers for sliced zucchini or mushrooms if you want a different veggie mix.
  • Add a diced jalapeño or sprinkle cayenne pepper for some heat.
  • Use ground turkey or sausage instead of chicken for a different protein.
  • Mix in a can of drained black beans with the veggies for some extra fiber and protein.
  • Serve over rice instead of tortillas if you prefer a bowl-style meal.