Cut the 20 flour tortillas into 8 pieces, then spray with cooking spray or brush with olive oil.
Place in the air fryer basket making sure not to overlap the tortilla slices, frying in batches. Air fry at 350 degrees F, and set cook time for 3 minutes, flip and continue frying for an additional 2 minutes.
Remove and cool. Continue air frying remaining tortillas in batches.