Preheat your oven to 400°F and line a large rimmed sheet pan with parchment paper for easy cleanup.
Slice the chicken breast into thin, even strips and place them on the sheet pan along with the sliced bell peppers and red onion.
Drizzle the extra virgin olive oil over the chicken and vegetables, then sprinkle evenly with chili powder, cumin, garlic powder, sea salt, and black pepper.
Use your hands or tongs to toss everything together until the chicken and produce are thoroughly coated in the oil and spice blend.
Spread the mixture out into a single layer, ensuring nothing is overcrowded so the vegetables can properly caramelize rather than steam.
Roast in the oven for 18 to 20 minutes, or until the chicken is cooked through and the peppers have slightly charred edges.
During the last 2 minutes of roasting, wrap the corn tortilla in foil and place it in the oven to warm through.
Remove the pan from the oven, squeeze fresh lime juice over the top, and garnish with chopped cilantro before serving inside the warm tortilla.