Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper for easy cleanup.
Slice the chicken breast into thin, even strips and place them into a large mixing bowl.
Add the sliced red bell pepper, green bell pepper, and red onion to the bowl with the chicken.
Drizzle the extra virgin olive oil over the chicken and vegetables.
Sprinkle the chili powder, ground cumin, garlic powder, sea salt, and black pepper evenly over the mixture.
Toss all ingredients together until the chicken and vegetables are thoroughly coated in the oil and spices.
Spread the mixture in a single, even layer onto the prepared sheet pan to ensure everything roasts properly.
Roast in the oven for 18 to 22 minutes, or until the chicken is cooked through and the vegetables are tender with slightly charred edges.
Remove the pan from the oven and immediately drizzle the fresh lime juice over the hot fajita mixture.
Garnish with chopped fresh cilantro and serve warm in a bowl.