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Easy Sheet Pan Fajitas Recipe with Peppers and Onions Perfect for Dinner

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A quick and easy sheet pan fajitas recipe featuring tender chicken, sweet bell peppers, and caramelized onions roasted together for a flavorful and fuss-free dinner.

Ingredients

Scale
  • 1 pound (450 grams) chicken breasts or thighs, thinly sliced
  • 3 medium bell peppers (red, yellow, green), sliced into strips
  • 1 large yellow or white onion, sliced into strips
  • 2 tablespoons extra virgin olive oil
  • 2 tablespoons fajita seasoning (blend of chili powder, cumin, paprika, garlic powder, onion powder, and a pinch of cayenne)
  • Salt and freshly ground black pepper to taste
  • Juice of 1 lime
  • Fresh cilantro, chopped (optional, for garnish)

Instructions

  1. Preheat your oven to 425°F (220°C).
  2. Slice the chicken and vegetables into thin strips about 1/4 to 1/2 inch thick.
  3. Mix the fajita seasoning if not using premade: combine 1 tsp chili powder, 1 tsp cumin, 1 tsp smoked paprika, 1/2 tsp garlic powder, 1/2 tsp onion powder, 1/4 tsp cayenne, salt, and pepper to taste.
  4. In a large mixing bowl, toss the chicken and veggies with 2 tablespoons olive oil and the fajita seasoning until evenly coated.
  5. Spread the mixture out in a single layer on a rimmed 18×13-inch sheet pan to avoid overcrowding.
  6. Roast in the oven for 20-25 minutes, flipping and stirring halfway through (around 12 minutes) to ensure even cooking and caramelization.
  7. Once done, squeeze fresh lime juice over the fajitas and sprinkle chopped cilantro on top if desired.
  8. Serve hot with warm tortillas and your favorite toppings such as sour cream, avocado, or salsa.

Notes

For extra crisp veggies, leave the pan open at the end of roasting or broil for 1-2 minutes, watching carefully to avoid burning. Rest the chicken for 5 minutes after baking to keep it juicy. Use gluten-free fajita seasoning and tortillas to maintain gluten-free status. Can substitute chicken with steak, shrimp, tofu, or turkey sausage with adjusted cooking times.

Nutrition

Keywords: sheet pan fajitas, easy fajitas, chicken fajitas, peppers and onions, quick dinner, one-pan meal, healthy fajitas