Begin by spraying a large sheet pan with cooking spray. Place the frozen loaves onto the baking sheet and cover with plastic wrap that has been lightly sprayed with cooking spray.
Set in a warm area and allow to thaw and rise until the loaves have about doubled in size.
Preheat your oven to 350 degrees F.
On a lightly floured surface roll out each dough loaf into an 18-inch circle.
Top with a layer of pepperoni, then a layer of provolone, another layer of pepperoni, and finish with a layer of white American cheese. (Each loaf will use roughly 1/4 a pound each of provolone, pepperoni, and white American cheese.)
Starting at one end, roll up into a loaf. Tuck in the sides as you roll. Seal the seam and ends securely using a bit of water to make the dough stick.
Place both loaves back onto your greased sheet pan with the seam side down. Brush the loaves with olive oil. Bake for about 30 minutes. The loaves should be lightly browned.
This pizza bread can be served warm or at room temperature. If serving warm, allow the loaves to cool slightly before slicing with a serrated knife.
Optional: Serve with pizza or pasta sauce for dipping.