Place a pizza stone (if using) in the oven. Preheat to 425F.
In a large bowl, whisk together the almond flour, arrowroot powder, baking powder, salt, and garlic powder.
In a medium bowl, whisk together the eggs, milk, psyllium husk, and vinegar. Combine the wet mixture into the dry.
Place a sheet of parchment paper on the counter. Pour the batter onto the parchment. Drizzle a little olive oil on top of batter. Place another sheet of parchment paper over the batter, and roll the dough into the desired shape for crust, about 1/4″ thick.
Slip the paper with crust onto the pizza stone or a pan, carefully peel off top paper, and par-bake for 15 minutes.
Remove from oven. Slide the parchment paper out from under the crust. Add desired toppings and bake for 10 to 15 minutes more.