Soak potato slices in a bowl of water for 30 minutes to remove extra starch, so potatoes will crisp when cooking. Rinse thoroughly.
Put potato slices in an air fryer at 400 degrees and cook 10 to 13 minutes until crispy. Be watchful of last few minutes, that potato slices do not burn. You can also cook in the oven using a silpat baking mat so that potatoes do not stick. Turn after 5 minutes. Oven temp 400 degrees.