Drain the chickpeas (save the liquid). Add them to food processor with gluten free flour, arrowroot powder, salt, baking soda, and the chickpea liquid. Process everything together.
Preheat oven to 400ºf.
Add large cast iron pan to the oven. Once mixture is smooth and the oven is fully preheated, remove the pan from the oven, line it with parchment paper, and pour the mixture onto the paper. Spread it out to make it even.
Toss it back in the oven and let it cook for about 8 minutes.
Add can of tomatoes to food processor along with fresh basil, salt, and olive oil. Process together. Then pour it into a container and set it aside.
The crust should be done in the oven by now, you can remove it.
Dump the whole can of chickpeas into a saucepan with baking soda, and water. Bring this to a simmer and let them cook for about 15 minutes.
Add chickpeas and the liquid into a food processor with lemon juice then process it on high. Now add in coconut oil, lactic acid, tapioca starch, salt, and process again until very smooth. Then add it to a container and set it aside.
Remove the crust from the pan, flip it over, then add on the sauce, spread it out. Then add on dollops of the cheese. Place pizza back in pan then to the oven and let it cook for 15 minutes at 400ºf.
When it's done, top it with some fresh basil and olive oil then enjoy!