Preheat oven to 425°F. In medium mixer bowl blend the yeast, flours, dry milk powder, xanthan gum, salt, gelatin powder, and Italian herb seasoning on low speed using regular beaters. Add warm water, sugar, olive oil and vinegar. Beat on high for 3 minutes. Add water if the dough is too stiff. The dough will resemble soft bread dough. Put mixture into 12 inch pizza pan that has been coated with cooking spray. Sprinkle extra flour onto the dough, then press the dough into the pan. Bake the crust for 10 minutes. Remove from oven, top with your favorite sauce and toppings. Bake for another 20-25 minutes. *If dough becomes too sticky, use oil or water on your hands to help work the dough.