Preheat your air fryer to 400°F (200°C).
Slice the chicken breast into even strips or nuggets.
In a small bowl, pour the buttermilk. In a separate shallow dish, combine the almond flour, garlic powder, onion powder, paprika, sea salt, and black pepper.
Dip each piece of chicken into the buttermilk, allowing any excess to drip off, then dredge thoroughly in the seasoned almond flour mixture.
Place the coated chicken in the air fryer basket in a single layer and lightly mist with the avocado oil spray.
Air fry for 10-12 minutes, flipping halfway through, until the coating is golden brown and the chicken is cooked through.
While the chicken is finishing, toast the whole-grain waffle until warm and slightly firm.
Place the toasted waffle on a plate, top with the golden air-fried chicken, and finish with a drizzle of maple syrup.