I normally go to Golden Pride rather than Frontier because there is one near my house on east Central (old route 66). It is owned by the same people that own Frontier and has the same great breakfast burritos. I also adore their homemade green chili stew and all the side dishes there are great!
It is fast food, meaning that you get your order quickly, but everything so far as I can tell is homemade. For that reason Golden Pride is my favorite fast food restaurant.