In a mixing bowl, add the water and sourdough starter and mix together with a dough whisk to get a frothy consistency.
Next, add the flour and salt and use the dough whisk to mix those dry ingredients together.
Depending on what pizza you're making, you could totally add your spices to the dough to give it more flavor. I recommend adding the basil and oregano to the dough.
Finally, add your olive oil and mix everything until the dough comes together.
Transfer the dough to a bowl and let the dough sit out anywhere from 20 minutes to a few hours. This will allow the gluten to rest and reach room temperature. This dough is very flexible to work with. If your dough is springing back, let it rest for a bit and try rolling it out after that.
While your dough is resting, preheat your oven to 400 degrees and line your pizza pan with parchment paper. Set that aside.
If you are making the Mexican Style Pizza or the Chicken Pesto Pizza, start cooking the ground beef or chicken while the oven is preheating and the dough is resting.
Once your dough is rolled out, start adding the 'sauce and cheese' layers for any of the 3 sourdough pizza ideas! Bake each pizza at 400 degrees for 15 minutes.
Once the pizzas are baked, add the fresh toppings on afterwards. This step is mainly for toppings like avocado, lettuce, basil, tomatoes, etc. If you'd like to place cooked beef, chicken, peppers, etc before going in the oven you totally can.