Slice the chicken breast into thin, even strips and place them in a bowl.
Toss the chicken with chili powder, cumin, garlic powder, sea salt, and black pepper until well coated.
Heat the olive oil in a large skillet over medium-high heat until shimmering.
Add the chicken strips to the skillet and cook for 5-6 minutes until golden brown and cooked through.
Add the sliced bell peppers and red onions to the skillet, sautéing for another 3-4 minutes until tender-crisp.
Squeeze the fresh lime juice over the chicken and vegetable mixture and stir to combine.
Warm the corn tortillas in a dry pan or over an open flame for 30 seconds per side.
Divide the chicken and vegetable mixture between the tortillas.
Top each wrap with sliced avocado and fresh cilantro before serving.