Start by slicing a pocket into each chicken breast. Hold the chicken steady and cut along one side, making sure to leave the other side intact. Ensure the pocket is big enough for stuffing but be gentle with your knife.
In a bowl, stir together the sundried tomatoes, mozzarella cheese, cream cheese, garlic powder, Italian seasoning, salt, and black pepper. It should smell amazing and look colorful! Use a fork to ensure everything is well combined, avoiding any clumps of cream cheese.
Fill each chicken breast pocket with the tomato and cheese mixture. Press the edges to seal them tightly to avoid leakage while cooking.
Lightly coat the outside of the chicken with olive oil for flavor and crispiness. A little will give the chicken a lovely sheen without making it greasy.
Place the stuffed chicken in the air fryer basket, ensuring they are not overcrowded. Cook until golden and the chicken is cooked through. It is done when the outside is crispy, and the inside is juicy.
Remove the chicken from the air fryer and let it rest for a few minutes. This allows the juices to redistribute, keeping your chicken moist and flavorful.
After resting, slice the chicken to reveal the gorgeous filling inside. Colors should pop, and warm scents of garlic and herbs will emerge. Serve with your favorite sides.