Slice the chicken breast into strips and submerge in low-fat buttermilk for at least 20 minutes to tenderize.
In a shallow bowl, whisk together the whole wheat flour, cornstarch, smoked paprika, garlic powder, onion powder, sea salt, and black pepper.
Remove chicken from buttermilk, letting excess drip off, then dredge thoroughly in the flour mixture.
Lightly coat the chicken with avocado oil and place in an air fryer at 400°F for 12-15 minutes, flipping halfway, until the coating is golden and crispy.
While the chicken cooks, toast the whole grain waffle until it reaches your desired level of crispness.
Place the crispy chicken atop the warm waffle, drizzle with pure maple syrup, and garnish with sliced green onions.