Heat 1 tablespoon of olive oil in a skillet over medium-high heat.
Add the sliced chicken breast and cook until browned, about 5-7 minutes.
Add the bell pepper, onion, chili powder, and cumin. Cook until vegetables are tender, about 5 minutes.
Remove the mixture from the skillet and set aside.
Wipe the skillet clean and add the remaining 1 tablespoon of olive oil.
Place a tortilla in the skillet, sprinkle with cheese, add the chicken and vegetable mixture, and top with more cheese. Place another tortilla on top.
Cook until the bottom tortilla is golden brown, then flip and cook the other side until golden brown and the cheese is melted.
Repeat with the remaining tortillas and filling.
Cut into wedges and serve warm.