Preheat your air fryer to 375°F (190°C). Separate the onion slices into individual rings.
Set up a breading station with one bowl of whisked egg whites and another bowl of breadcrumbs mixed with paprika, salt, and black pepper.
Dip each onion ring into the egg whites, then coat it in the breadcrumb mixture, pressing lightly to adhere.
Arrange the breaded onion rings in a single layer in the air fryer basket. Spray lightly with olive oil. Air-fry for 10-12 minutes, flipping halfway through, until the onion rings are golden and crispy.
Meanwhile, prepare the chipotle sauce by mixing the Greek yogurt, chipotle in adobo sauce, garlic powder, and a pinch of salt in a small bowl.
Serve the onion rings hot with the chipotle sauce on the side for dipping.
This makes 4 servings. Each serving is 2 WW Points.