Is it possible to make a vegan version of the traditional altoona style pizza recipe?

This Chicago-style vegan deep-dish pizza is made filled with onions, peppers, vegan Italian sausages, and dairy-free cheese. The recipe hasn't changed, but now it provides a recipe for making pizza dough (formerly it was called for 1 ready-made pizza dough). Also known as Altoona Hotel Pizza or Altoona Sicilian Pizza, several local establishments stepped in to fill the gap and bring their own Altoona-style versions of pizza to life.