Slice the chicken breast into even strips or keep whole for a thin cutlet.
Submerge chicken in the buttermilk in a glass bowl for at least 20 minutes to tenderize.
In a shallow dish, whisk together almond flour, arrowroot starch, garlic powder, onion powder, smoked paprika, sea salt, and black pepper.
Remove chicken from buttermilk, letting excess drip off, then dredge thoroughly in the flour mixture until fully coated.
Preheat air fryer to 375°F and lightly coat the basket with the avocado oil.
Place chicken in the basket and cook for 12-15 minutes, flipping halfway through, until the coating is golden and crispy.
While chicken cooks, steam the green beans and roast or microwave the sweet potato until tender.
Serve the crispy chicken alongside the prepared vegetables for a balanced, clean-eating dinner.