Preheat oven to 375 degrees F.
In a large mixing bowl whisk together fours, baking soda, and seasonings.
In a small bowl, mix the 1/4 cup hot water with the ground chia or flax seeds. Stir vigorously to prevent lumps and allow to sit for 3 minutes.
Make a well/space in the center of the flour and pour in the remaining water, olive oil, and chia+water mix. Stir in a circular motion starting at the center until the dry mixture is completely mixed with the wet ingredients. Stir for 1 minute.
Grease two cast-iron skillets or pizza pans with olive oil.
Divide the dough in half and starting in the center press out evenly towards the edges. It may be slightly wet so spread carefully and press down making sure to not leave any holes or thin spots.
Bake on center rack for 15-20 min until the edges are crispy and the bottom is browned.
Remove from oven and spread with sauce or pesto and favorite toppings.
Increase oven temp to 425 degrees. Return to oven and bake another 10-15 minutes or until toppings are cooked. You can also sauté toppings ahead of time for a shorter final cooking time (5 min). Pizza's can also be broiled to cook for 7-10 minutes.