01 - Preheat air fryer to 400°F for 5 minutes to ensure optimal cooking temperature.
02 - In a shallow bowl, combine flour, baking powder, smoked paprika, garlic powder, and salt. Mix thoroughly to distribute spices evenly.
03 - In a second bowl, whisk together eggs and buttermilk until fully blended and smooth.
04 - Place panko breadcrumbs in a third bowl, creating a three-step dredging station.
05 - Separate onion slices into individual rings. Dredge each ring in the flour mixture, shaking off excess. Dip into the egg mixture, allowing excess to drip off. Finally, coat thoroughly with panko breadcrumbs, pressing gently to ensure adhesion.
06 - Place breaded onion rings in a single layer in the air fryer basket, ensuring they do not overlap. Lightly spray with olive oil.
07 - Air fry in batches for 10-12 minutes, flipping halfway through cooking and spraying with additional oil. Cook until golden brown and crispy throughout.
08 - Combine mayonnaise, chipotle peppers, lime juice, garlic powder, and salt in a small bowl. Mix until completely smooth and well incorporated. Refrigerate until serving.
09 - Serve hot onion rings alongside chipotle mayo for dipping. Best enjoyed immediately while crispy.