First, add psyllium husk to the room-temperature water, whisk to combine, and set aside for 5 minutes. Psyllium husk will absorb the liquids and form into a gel.
After five minutes, add the sourdough starter to a mixing bowl and pour psyllium husk gel into it. Mix to combine. If you are using starter discard, add 4-7g of active dry/instant yeast or 20g of fresh yeast.
Add all the dry ingredients to the mixing bowl and mix with your hands.
Cover with a kitchen towel or plastic wrap and leave the dough to ferment and rise for 3-6 hours at room temperature or longer in the refrigerator (anywhere from overnight up to 2 days). If you are using starter discard and yeast, leave the dough to rise for 1 hour at room temp.
Preheat the oven to 400F/200C together with the baking tray you are using. I like to use my cast iron skillet to bake pizza crust! You can use a pizza stone or a simple baking sheet.
Then, transfer the dough onto a piece of parchment paper and divide it into two parts if making two medium-size pizzas or use the whole dough for a large pizza.
Pour a little bit of oil onto the dough to prevent sticking. Now, roll the dough out or shape it with your hands. For a thinner pizza roll the dough out thin, for a fluffier thicker crust roll the dough less.
Then, form the borders of the pizza and create a nice round shape.
Transfer the dough together with the parchment paper onto the baking tray (in my case, it is a cast-iron skillet) and bake the crust without toppings for 15 minutes (20 minutes for a crunchy crust). This step is called par-baking meaning you pre-bake the dough before the toppings go on it.
Then, add the toppings of choice and return to the oven for another 10 minutes. When ready, slice the pizza and enjoy! Top with fresh greens for extra flavor.