Yes, you can freeze prior to air frying or afterwards. Beforehand simple freeze them on a baking try until frozen and then place them in a ziploc bag. When ready to eat remove from freezer and allow to thaw completely. If you want to freeze after air frying, allow to completely cool and then freeze on a baking tray in the freezer, then place them in a ziploc. When ready to eat, thaw completely in the fridge and then reheat in the oven or air fry for 5 minutes at 325F.