Fold the half of the dough with no ingredients over the half with the ingredients and roll up the ends, or press them with a fork. Add a little bit of water if you need them to stick together.
Divide the pizza dough in half, to make two calzones. Roll out the dough into a circle so that it's about 1 foot in diameter. Place the mozzarella cheese on half of the dough, top with bacon and olives. Usually I saute my mushrooms first, but you can omit this step and place the olives on top of the cheese and bacon and if you are using the anchovies add it now.