Preheat the air fryer to 400°F and slice the sweet potato into thin wedges.
In a small bowl, toss the sweet potato wedges and broccoli florets with half of the olive oil, salt, and pepper.
Place the vegetables in the air fryer basket and cook for 10 minutes, shaking halfway through.
While vegetables cook, dip the chicken breast into the kefir, ensuring it is fully coated.
In a shallow dish, combine the panko breadcrumbs, garlic powder, paprika, and the remaining salt and pepper.
Press the chicken into the panko mixture until evenly coated on both sides, then lightly spray or brush with the remaining olive oil.
Move the vegetables to one side of the air fryer basket and add the chicken.
Air fry everything for an additional 12-15 minutes, flipping the chicken once, until the crust is golden and the chicken reaches an internal temperature of 165°F.