As you are making the stuffed breast in the air fryer, you need to check whether the meat is done or not. For this task, we can go for a meat thermometer. It helps to determine the internal temperature of the meat. The internal temperature must be 175 degrees F if you are lacking this instrument. No worries, you can cut the chicken to check. If the meat is white and juicy, it is cooked. If it still has that pinkish shade, it needs some more time.