Slice the chicken breast into even strips.
Place the chicken in a bowl with the buttermilk and let soak for 10 minutes.
In a shallow dish, whisk together the almond flour, arrowroot powder, garlic powder, onion powder, smoked paprika, sea salt, and black pepper.
Remove each chicken strip from the buttermilk, letting the excess drip off, then dredge thoroughly in the flour mixture.
Lightly coat the chicken strips with avocado oil and place in the air fryer basket.
Air fry at 400°F for 12 to 15 minutes, flipping halfway through, until the coating is golden and the chicken is cooked through.
Toast the whole grain waffle until crisp.
Serve the hot chicken strips over the waffle and finish with a drizzle of maple syrup.