Slice the chicken breast into even strips and submerge them in a bowl with the low-fat buttermilk to marinate for at least 15 minutes.
In a shallow dish, whisk together the almond flour, arrowroot starch, smoked paprika, garlic powder, onion powder, sea salt, and black pepper.
Remove each chicken strip from the buttermilk, letting the excess drip off, then dredge thoroughly in the flour mixture until fully coated.
Lightly coat the air fryer basket with avocado oil, place the chicken inside without crowding, and spray the tops of the strips with the remaining oil.
Air fry at 400°F for 10 to 12 minutes, flipping halfway through, until the coating is golden and the internal temperature reaches 165°F.
Toast the whole-grain waffle until crisp, then top with the hot chicken strips and a drizzle of maple syrup mixed with red pepper flakes.