While you are getting the dish ready, preheat your oven at 370F.
Properly wash the chicken breast and dry. Chop it into small pieces.
Spray a pan with cooking oil and pour 2 tablespoons of pesto in it. Add the slices of chicken and top it with the remaining 3 tablespoons of pesto.
Use aluminum foil to cover the pan and place in the oven. Allow it to sit in the oven for 15 minutes until the meat is cooked. Do not allow the meat to overcook.
Top the chicken with the grated mozzarella. Take off the aluminum foil and allow to cook for an extra 5 minutes.
Serve in a platter and enjoy.