Slice the yellow onion into thick rings and the chicken breast into thin strips.
In a medium bowl, whisk together the whole wheat flour, garlic powder, paprika, sea salt, and black pepper.
Slowly pour the light beer into the flour mixture, whisking until a smooth, thick batter forms.
Dip each onion ring and chicken strip into the batter, ensuring they are fully coated, and shake off any excess.
Lightly coat the air fryer basket with olive oil and place the items in a single layer, working in batches if necessary.
Air fry at 375°F for 12-15 minutes, flipping halfway through, until the coating is golden brown and crispy.
While the rings and chicken cook, whisk together the non-fat Greek yogurt and sriracha in a small bowl to create the zesty dip.
Serve the onion rings and chicken immediately while hot with the dip on the side for the best texture.