Slice the chicken breast into thick strips and place them in a small bowl with the buttermilk to marinate for 15 minutes.
In a shallow dish, whisk together the almond flour, arrowroot powder, smoked paprika, garlic powder, onion powder, sea salt, and black pepper.
Remove each chicken strip from the buttermilk, letting the excess drip off, and dredge thoroughly in the flour mixture, pressing to ensure a thick coating.
Lightly coat the chicken strips with avocado oil using a spray or brush.
Place the chicken in an air fryer basket at 400°F and cook for 12-15 minutes, flipping halfway through, until the coating is golden and the internal temperature reaches 165°F.
While the chicken cooks, toast the whole-grain waffle until it is hot and crisp.
Place the toasted waffle on a plate, top with the golden chicken strips, and finish with a light drizzle of pure maple syrup.