Place the yogurt, mint, lemon, salt, and pepper in a bowl and stir well to mix. Taste and adjust for salt and pepper. Set aside in the refrigerator.
Slice the zucchini into ⅛-inch rounds using a knife or a mandoline slicer. Try to make them all the same width.
Place the zucchini rounds in a mixing bowl with the oil and seasonings and toss well to coat the rounds evenly.
Place the rounds in a single layer in the air fryer basket or rack. Work in batches if you can't fit them all in a single layer to avoid overcrowding.
Preheat the air fryer to 400 F.
Air fry for 15-20 minutes, flipping halfway, until crispy and browned. Check periodically after the halfway mark and remove any chips that are turning too brown.