Preheat your air fryer to 400°F.
Dice the sweet potato into small cubes, toss with avocado oil, and air fry for 15 minutes until tender.
Place the chicken breast in a bowl with the buttermilk and let it marinate for 10 minutes.
In a separate shallow dish, whisk together the almond flour, garlic powder, onion powder, sea salt, and black pepper.
Remove the chicken from the buttermilk and dredge it through the flour mixture, pressing firmly to create a thick crust.
Place the coated chicken in the air fryer and cook for 12-15 minutes, flipping halfway through, until the exterior is golden and crispy.
While the chicken cooks, steam the broccoli florets over boiling water for 5 minutes until they are bright green and tender-crisp.
Slice the chicken and serve it alongside the roasted sweet potatoes and steamed broccoli.