Unroll the pizza crust and slightly flatten it out (so it is thinner) place the ham and cheese on the pizza crust then sprinkle with a 1/2 tsp Italian seasoning roll it up, pinch the ends in. Place onto a sheet pan.
To a small bowl add in all of the ingredients for the optional butter topping and stir. Brush on top of the calzone. Slice four holes on the top of the calzone so it can breathe.
Bake for 30 to 40 minutes or until darker golden brown on top.