Begin by thoroughly washing and peeling your sweet potatoes. Slice them into thin, uniform rounds about 1/8 inch thick.

Drain and pat the sweet potatoes dry. In a large mixing bowl, add the slices and drizzle with olive oil. Toss to coat.

In a separate bowl, combine brown sugar, chili powder, cumin, and salt. Stir until uniform.

Sprinkle the seasoning mixture over the sweet potato slices and toss until well-coated.

Preheat your air fryer to 180°C (356°F). Arrange the slices in a single layer and air fry for 6-9 minutes.

Once crispy, transfer chips to a wire rack to cool completely before storing.