First things first, preheat your oven to 425°F (220°C). This high heat is crucial for getting a golden-brown crust while keeping the inside soft and chewy. While the oven heats up, line a large baking sheet with parchment paper to prevent the breadsticks from sticking and to make cleanup a breeze.
Lightly flour your work surface to prevent the dough from sticking. Gently roll out your pizza dough into a large rectangle, aiming for a thickness of about 1/4-inch. Carefully transfer the rolled-out dough onto your prepared baking sheet. Don't worry if the shape isn't perfect; rustic is part of the charm.
In a small bowl, mix the melted butter and freshly minced garlic. Using a pastry brush, spread this glorious mixture evenly over the entire surface of the pizza dough. Make sure to get all the way to the edges so that every bite is packed with rich, garlicky flavor.
Now for the best part! Evenly sprinkle the shredded mozzarella cheese over the garlic butter layer, followed by the grated Parmesan cheese. Finish it off by scattering the Italian seasoning, a pinch of salt, and a little black pepper over the top for that final layer of flavor.
Place the baking sheet into your preheated oven. Bake for 12 to 15 minutes. You'll know it's ready when the cheese is completely melted and bubbly, and the edges of the dough have turned a beautiful golden brown. The kitchen will smell absolutely amazing at this point.
Once baked, carefully remove the baking sheet from the oven. Let the breadsticks cool for just a minute or two, which makes slicing much easier. Use a pizza cutter or a sharp knife to cut them into strips. Garnish with fresh parsley and serve them immediately with a side of warm marinara sauce for dipping.