Activate Yeast: In a large bowl, combine warm water, sugar, and yeast. Let it sit for 5–10 minutes until foamy.
Make the Dough: Add flour, salt, and olive oil to the yeast mixture. Mix until a dough forms, then knead for 5–7 minutes until smooth. (Use a stand mixer or knead by hand.)
Let It Rise: Cover the dough with a towel and let it rise for about 1 hour or until doubled in size.
Prepare the Pan: Preheat oven to 400°F (200°C). Lightly grease a 9x13-inch baking pan and press the dough evenly into the pan.
Add Toppings: Brush melted butter over the dough. Sprinkle evenly with mozzarella, Parmesan, garlic powder, and Italian seasoning.
Bake: Bake for 12–15 minutes, or until the cheese is bubbly and the edges are golden brown.