Whisk together salt, dried oregano, garlic powder, onion powder, and flour in a large bowl.
3 teaspoons fine salt, 2 tablespoons dried oregano, 2 teaspoons garlic powder, 2 teaspoons onion powder, 7 ½ cups unbleached bread or all-purpose flour
Then stir in the rehydrated yeast.
1 package active dry yeast, rehydrated according to package instructions (see notes), ½ teaspoon sugar to feed the yeast
Gradually add water. Mix the flour and water by hand until the dough comes together.
2 ¼ cups water at room temperature, or as required
At first, you only get chunks of flour, which is normal. But the flour eventually absorbs all the water, and as you keep kneading, you will form a rough ball (this happens quickly).
At this point, add one tablespoon of olive oil as you form the dough into a smoother ball. It will give flavor and soften the crust.
Remove the ball of dough from the bowl and place it on a well-floured flat surface.
Continue kneading it for about 2 minutes or until the dough becomes smooth and elastic. (During the kneading process, sprinkle the work surface with more flour if the dough feels too sticky, and gently knead it in).
Place dough in a lightly oiled bowl and cover with a clean kitchen towel. Let it rise for about 90 minutes at room temperature.
After the initial rising time, take out the baking sheet and coat it with two tablespoons of olive oil (it adds extra flavor to the bottom of the pizza).
Place the risen dough in the center of the sheet. Gently stretch and push it first into a large oval.
Then continue to shape it into a rectangular form, evenly covering almost the whole length of the baking sheet, and the dough stops resisting.
Cover with a clean kitchen towel and let it rise for another 30 minutes at room temperature. If the dough has stretched back a little, gently reshape it into its final form.
Optional: gently make small dents into the risen dough with the knuckles of your fist to create extra air pockets.
Note: if you have the time, a 90 minutes second rise instead of 30 will give you an even lighter crust.
Continue to pre-bake the pizza crust.