Combine 1 cup flour, yeast sugar, salt, garlic powder, 1/4 cup Parmesan, and Italian seasoning in a larger bowl.
Heat water until 120 to 130 degrees F. Add the water, 3 tablespoons olive oil, and pepperoni to the flour mixture.
With a wooden spoon mix the ingredients until well combined.
Gradually add the remaining flour until the dough is slightly sticky. As I add the flour I work it in by my hand.
Knead the dough until smooth and slightly sticky. Set in a warm place, cover, and let it rest for about an hour or until double in size.
Grease a 10-inch cast iron skillet. Once the bread is raised to double in size, punch down. Divide the dough into 12 equal parts.
Form into balls and arrange in the skillet. Let rest for about 1/2 hour.
Preheat oven to 375 degrees F. Just before the bread goes into the oven brush it with 1 tablespoon of olive oil and sprinkle with 2 tablespoons of Parmesan cheese.
Bake for 25 to 27 minutes or until bread is browned. Remove from oven and enjoy.