A couple of days ago I saw the Amy's Soy Cheese Pizza at the store - BUT the ingredients had milk protein - I was bummed and put it back.
Another thing about the fast food. You can go to Taco Bell website - it's very cool. You can get nutrition facts on each item but then customize it i.e. Chicken soft taco No Cheese and it will tell you how many fat grams etc.
I printed it out once and figured there were about four things that were 5 - 7 grams of fat and didn't have anything obviously bad. I haven't actually eaten there yet. Makes me nervous that there's hidden stuff i.e. msg in the chicken or whey in the tortilla. Who knows???
The only two places I know are safe for me are:
El Pollo Loco - I get a boneless/skinless chicken breast and flour tortilla and have never gotton sick.
Pick up Stix - House Chicken with zucchini and water chestnuts on steamed white rice. They use very little oil and I have never gotton sick there either.