In a bowl, combine steak with lime juice, chili powder, cumin, paprika, salt, and black pepper.
Let the steak marinate for 15 minutes.
Heat 1 tablespoon olive oil in a large skillet over medium-high heat.
Add sliced steak and cook until browned and just cooked through.
Remove steak from the skillet and set aside.
Add remaining olive oil to the same skillet.
Sauté bell peppers and onion until soft and slightly charred.
Return steak to the skillet and toss with vegetables.
Heat a clean skillet over medium heat.
Place a tortilla in the skillet and sprinkle cheese on one half.
Add steak and vegetable mixture over the cheese.
Sprinkle more cheese and fold the tortilla in half.
Cook until golden and cheese is melted, flipping once.
Repeat with remaining tortillas.
Slice and serve hot.