preheat oven to 400 degrees
slice your chicken into 12 pretty equal pieces, six half breast sliced in half longwise works best for me
wrap with one or two slices pancetta, depending upon how it's been sliced
heat pan on stove over medium heat with a bit of olive oil and butter
place half of your chicken in the pan and let pancetta start to crisp up before turning for another few minutes
remove the chicken and place on a tray lined with parchment paper
place remaining chicken in hot pan, cook each side of pancetta until it starts to crisp up
remove chicken and place on tray with first batch of chicken
place one or two tablespoons mozzarella on each chicken breast, however much looks right to you
place tray into oven until cheese melts and starts to brown up to your satisfaction
serve with any kind of sauce you like, I prefer a pan sauce made from pan drippings from this recipe