Warm up your tortillas first to make them pliable (you can do this over the open flame of a gas stove or in your microwave).
Depending on the size of your air fryer, you may need to fry in batches (I usually cook four at a time). Spray both sides of each tortilla lightly with cooking spray (only do this with the ones you plan on cooking immediately) and set on a flat pan.
Add some cheese to half of each tortilla. Follow this with some shredded chicken. Top with a little more cheese and fold the tortilla over the filling.
If necessary, preheat your air fryer. Add the tacos to the air fryer.
Air fry at 400 degrees Fahrenheit for, 12-14 minutes, flipping the tacos at around the 8-minute mark.
Remove from the air fryer and let sit for 2 minutes before digging in. Repeat with remaining tacos, if necessary.