Preheat air fryer to 390.
Using the apple peeler and corer or mandolin, slice the apples sideways on a thin setting
Spritz apples with a little oil, add cinnamon and salt and cover the apples (if you are using sugar, add it here).
Add apples to air fryer basket or pan. Be careful to not overfill/overload.
Air fry for 8-10 minutes at 390 degrees. Flip or shake basket about halfway through.
Let the apple chips rest a few minutes before eating.
Oven Method
Preheat oven to 400 degrees.
Follow all other steps.
Cook for about 20 minutes, flipping halfway through.
Let the apple chips rest a few minutes before eating.
Enjoy!