This is strange. It's not a calzone pizza. I think they bake a pizza with nothing on or in it, than cut it open and fill it. In this case with tuna fish and mozzarella.
In the caprese sighting I mentioned the karaoke tent. Another unfortunate thing about this restaurant was that the pizza and the schiaccina were served at least 15 minutes before the two pasta dishes I that I will post later. When you go to a restaurant together you suppose to eat together as well.... But than again, this is a uncommon and very well prepared and therefore recommendable dish.