1Prepare garlic butter: mix softened butter with minced garlic, parsley, a pinch of salt and pepper. Shape into a small log and freeze for 5 minutes.
2Cut a pocket in each chicken breast. Fill with garlic butter and seal well.
3Bread the chicken: dredge in flour, then beaten egg, then breadcrumbs, pressing gently to adhere.
4In a bowl, toss sweet potato cubes with olive oil, salt, and pepper until evenly coated.
5Preheat air fryer to 180°C (350°F).
6Place chicken pieces and sweet potato cubes in the air fryer basket in a single layer if possible.
7Cook for 12–15 minutes at 180°C (350°F), turning halfway, until chicken is golden and cooked through (internal temperature reaches 74°C/165°F).
8Serve hot, with a green salad if desired.