Cut a slit through the side of each chicken breast, then enlarge to make a small pocket. Cut the cheese into 4 slices, then tuck one slice into each chicken pocket with 1–2 pieces of tomato depending on their size. Sprinkle the outside of the chicken breasts with seasoning.
Wrap each chicken breast with a slice of Parma ham and put in a roasting tin.
Bake in a preheated oven, 200°C (400°F), Gas Mark 6, for 30 minutes until the chicken is cooked when tested (see