Place the Quinoa (2 1/2 cup) in a large bowl. Add enough water to cover the quinoa and let sit overnight or at least 8 hours. After 8 hours, drain the water and rinse the quinoa thoroughly with a wire mesh strainer, or pour it into a nutbag to rinse. Do not skip this step even if you are using 'pre-rinsed' quinoa. It won't work unless it's soaked for a long time to absorb water and soften.
Preheat the oven to 400 degrees F (205 degrees C). Line a baking sheet with parchment paper.
Add the quinoa, Water (1 cup), the Baking Powder (1 tablespoon), Garlic Powder (2 tablespoon), Italian Herb Seasoning (2 tablespoon), Sea Salt (1 teaspoon) and Nutritional Yeast (1/4 cup) to a food processor. Blend until a smooth batter forms.
Pour the batter onto the baking sheet, using a spatula to spread evenly across the sheet.
Bake the crust for 15 minutes. Flip the crust, removing the parchment paper, and bake for 10 minutes more, or until golden brown.
Top the crust with your favorite toppings and then put back in the oven for another 10 minutes.
Cut into squares and serve!