Slice the chicken breast into thin strips and toss with 1 tablespoon of Greek yogurt and lemon juice in a bowl to tenderize.
In a separate shallow dish, whisk together the almond flour, garlic powder, onion powder, smoked paprika, sea salt, and black pepper.
Dredge each chicken strip into the almond flour mixture, pressing firmly to ensure the coating adheres, then lightly mist with olive oil.
Place the chicken in an air fryer basket and cook at 400°F for 12-15 minutes, flipping halfway through, until the exterior is golden and crunchy.
While the chicken cooks, blend the rolled oats into a fine flour, then whisk in a bowl with the remaining 0.25 cup Greek yogurt, egg white, and baking powder.
Pour the batter into a preheated waffle iron and cook until the waffle is lightly browned and firm to the touch.
Plate the hot waffle, top with the golden chicken strips, and finish with a light drizzle of maple syrup.