Slice the chicken breast into even strips or nuggets.
In a small bowl, whisk together the Greek yogurt and lemon juice to create a healthy buttermilk substitute.
Place the chicken strips in the yogurt mixture and let them marinate for at least 10 minutes.
In a separate shallow dish, combine the almond flour, garlic powder, onion powder, paprika, sea salt, and black pepper.
Dredge each piece of marinated chicken in the almond flour mixture, pressing firmly to ensure an even coating.
Lightly coat the air fryer basket with avocado oil, place the chicken inside, and mist the tops of the chicken with the remaining oil.
Air-fry at 400°F (200°C) for 12-15 minutes, flipping halfway through, until the coating is golden and the chicken is cooked through.
While the chicken is cooking, toast the whole grain waffle until it reaches your desired level of crispness.
Place the toasted waffle on a plate, top with the golden fried chicken, and finish with a light drizzle of maple syrup.