Preheat the air fryer. Set it to 375°F (190°C) for 3–5 minutes.
A hot basket helps the tortilla crisp quickly and evenly.
Cook the bacon or sausage (if needed). Use the air fryer or a skillet to cook until crisp, then crumble. If you already have leftovers, even better.
Scramble the eggs. Heat a small skillet over medium, add butter or oil, then pour in whisked eggs with a pinch of salt and pepper. Stir just until softly set; they’ll finish in the air fryer.
Warm the tortilla slightly. Microwave for 10–15 seconds or lay it in a warm pan.
This prevents cracking when you fold it.
Layer the fillings. On one half of the tortilla, add cheese first (it acts like glue), then eggs, bacon or sausage, peppers, and onion. Keep a 1/2-inch border so nothing spills out.
Fold and seal. Fold the empty half over the filling to make a half-moon. Press gently to help the cheese start binding.
Lightly mist both sides with cooking spray.
Air fry. Place the tortilla in the basket, seam side down. Cook at 375°F (190°C) for 5–7 minutes, flipping once halfway. It’s done when the outside is golden and crisp and the cheese is fully melted.
Add optional extras. Carefully open a corner and tuck in avocado slices, hot sauce, or a spoonful of salsa.
Close, slice in half, and serve.