Really like this concept! As a vegetarian, I have come across many other services that focus on nutritionally customizable products, but when it comes to vegetarian options, the macros / protein numbers leave a lot to be desired. I've also noticed that a lot of the vegetarian options available at restaurants in the bay tend to be much more carb heavy than I would prefer, and it takes a lot of overhead to research / optimize each and every meal.
I'm always looking for ways to algorithmically optimize my meals, and currently Chipotle and their app does the best job of enabling this in a standardized way (can pretty easily get nutrition info and hook it into other apps) , but it ends up being pretty boring on a routine basis. Something like this, with an expanded product line would be really useful.