Slice the yellow onion into thick rings and separate them carefully.
Slice the chicken breast into thin, even strips and season them with a small pinch of the sea salt.
In a medium mixing bowl, whisk together the gluten-free flour, smoked paprika, garlic powder, remaining sea salt, and black pepper.
Slowly pour the light beer into the flour mixture, whisking constantly until a smooth, thick batter forms.
Dip each onion ring and chicken strip into the batter, allowing any excess to drip off before placing them in a single layer in an air fryer basket.
Lightly coat the battered items with a high-heat oil spray to ensure a golden finish.
Air fry at 375°F for 10-12 minutes, flipping halfway through, until the coating is crispy and the chicken is cooked through.
While the rings cook, combine the Greek yogurt, lemon juice, and finely chopped chives in a small bowl to create the dipping sauce.
Serve the hot onion rings and chicken strips immediately alongside the chilled yogurt dip.