Pizza Chicken Melts

1.Heat the grill to high. Sandwich the chicken breasts between two plastic food bags and beat them firmly with a rolling pin to flatten by a third. Heat the oil in a non-stick frying pan add the chicken and cook for 2 mins each side until golden.
2.Mix together the tomatoes and cheese. Take the chicken from the pan and wipe out the oil with kitchen paper. return the chicken to the pan and spread each chicken breast with 1 tsp of pesto, then pile the cheese and tomatoes on top.
3.Put under the hot grill for a minute or so until the cheese has melted. Serve with a favourite green vegetable or salad.