I have never used gelatin and things will work with out it.
I tried the pizza dough recipe from irishdaveyboy tonight without it and it still came out.

I did add about a tablespoon of ground up almonds to the flour mixture, and a little sorghum flour. You could also add a little garbanzo bean flour for the protein. It is easy to grind up nuts in a blender, I do batches of them and store it in the refrigerator in plastic ziplock bags. I also substituted yogurt for the dry milk so there would be less lactose, but keep the total amount of liquids about the same by decreasing the water a little bit.
I also proofed the yeast first by putting it into just the warm water with the 1/2 teasp. of sugar, and letting it sit a few minutes while I measured the other things out. This way I could make sure the yeast was not dead, was just the right temperature, and also could mix the dough by hand because the yeast would be already going. First I added the yogurt, oil, and vinegar and then the yeast water, and stirred and kneaded it with the spoon. The dough behaved well and was not ornery or overly sticky.... I am wondering if this would also make a cute, fast mini loaf of bread if it was not smashed down into a crust.
I was just relieved it didn't do the glueball in the bowl routine.
Instead of rolling it the oiled pan with a floured glass, I pressed it in with olive oiled hands.
I am thinking egg white or flax meal might work, also. I've done a lot of biscuit type pizza crusts that used egg and baking soda and vinegar to rise instead of yeast.