A quick Google search says:
"Though many frozen and fast-food varieties (of pizza) tend to be high in calories, fat, sodium and other unhealthy ingredients, pizza can be made healthier."
Fast-food pizza is called "junk food" for a reason.
Another Google search says:
"Calzones aren't exactly healthy food, especially if they are stuffed with meat and large amounts of cheese. A calzone typically uses the same amount of pizza dough as a pizza crust and is meant to serve four people. Eating a whole calzone yourself can mean eating more than your recommended calories for the day."