For the crispiest chips, ensure the sweet potato slices are as dry as possible before air frying. Don't overcrowd the air fryer basket; cook in batches for even cooking and maximum crispiness. Adjust cooking time based on your air fryer model; watch closely during the last few minutes to prevent burning. A light sprinkle of smoked paprika or a dash of cayenne pepper can add a delightful twist to the flavor profile. Store the cooked chips in an airtight container at room temperature to maintain their crispness.