Add flour, sugar, yeast, garlic powder, Italian seasoning, and salt to a large bowl. Blend properly.
Add the oil and warm water. Until a mixture that resembles a thick pancake forms, stir with a silicone spatula.
Using a spatula, add an extra cup of flour to the mixture. Only enough to ensure that the mixture holds together on its own.
Flour a flat surface, then transfer the dough mixture from your bowl to it using a little flour in your hand.
Once the dough is lump-free, stop kneading and add another few cups of flour. Avoid overworking the dough.
Put the dough in a bowl, then wrap it in a kitchen towel (or other kitchen towel that is large enough to cover the bowl completely).
For 45-60 minutes, let the dough in a bowl sit, covered. (We recommend waiting until 60 minutes, but if you need to use it sooner, do so.)
With a pizza stone inside, preheat the oven to 500°F.
Flour a large parchment paper.
Roll the dough out onto a floured surface. and spread out with your hands into approximately a 17-inch diameter.
Prick the pizza with a fork all over, excluding the edge, which will serve as the crust.
Add your pizza sauce, dairy-free shredded vegan pepperoni, Parmesan cheese, and any extra toppings you'd like to use to the top.
While still on parchment paper, bake the dairy-free pizza dough for 8 to 10 minutes.
Remove from the oven. Let it cool. Slice and serve!