Slice the chicken breast into even strips.
In a small bowl, whisk together the Greek yogurt and water to create a buttermilk-style marinade.
Submerge the chicken in the yogurt mixture and let it marinate for 10 minutes.
In a separate shallow dish, combine the almond flour, sea salt, black pepper, garlic powder, and smoked paprika.
Dredge each chicken strip in the almond flour mixture, pressing firmly to ensure an even, golden coating.
Lightly coat the air fryer basket with avocado oil and arrange the chicken strips in a single layer.
Air fry at 375°F for 12-15 minutes, flipping halfway through, until the exterior is crispy and the chicken is cooked through.
While the chicken cooks, toast the whole-grain waffle until warm and slightly firm.
Place the crispy chicken atop the waffle and finish with a light drizzle of maple syrup.