As far as I know, plant-based proteins are the main ingredients of vegan chicken. Therefore, it is also referred to as plant-based chicken. When world-famous fast-food brands introduced their versions of plant-based chicken products, I thought these are factory-made items. Why? Because I thought that the word ‘plant’ in the plant-based product stands for ‘factory’. Rather, it refers to plant-based proteins.
 
I have heard that most vegan chicken products have soy proteins used in the form of their base ingredients. If you have a soy allergy, just do not worry for there is also seitan-based vegan chicken available in the market. Seitan is derived from white gluten, and it is one of the well-known sources for vegan protein. Even though it is advertised as vegan, just look at the label to know whether the product has anything you are allergic to.