01 - Preheat oven to 425°F. Line a large sheet pan with parchment paper or foil for easy cleanup.
02 - In a large bowl, combine olive oil, lime juice, chili powder, cumin, smoked paprika, oregano, garlic powder, onion powder, salt, black pepper, and cayenne if using.
03 - Add chicken strips, bell peppers, onion, and minced garlic to the bowl. Toss until everything is evenly coated with the marinade.
04 - Spread the chicken and vegetable mixture in a single layer on the prepared sheet pan.
05 - Roast in the preheated oven for 20-25 minutes, stirring halfway through, until the chicken is cooked through and vegetables are tender and slightly caramelized.
06 - Remove from the oven. Garnish with chopped cilantro and a squeeze of lime juice. Serve hot with warm tortillas and your favorite toppings such as sour cream and avocado.