Slice the chicken breast into thin strips and season with half of the salt, pepper, garlic powder, and paprika.
Slice the Vidalia onion into 1/2-inch thick rings and separate them.
In a small bowl, whisk together the flour, light beer, egg white, and the remaining seasonings until a smooth, bubbly batter forms.
Preheat the air fryer to 375°F and lightly coat the basket with avocado oil.
Dip each onion ring into the beer batter, allowing excess to drip off, then place in the air fryer basket in a single layer.
Arrange the seasoned chicken strips in the basket alongside the onion rings.
Air fry for 10-12 minutes, flipping halfway through, until the chicken is cooked through and the onion rings are golden brown and crispy.