Long story short (kind of):
My BF and I went to El Pollo Loco for dinner the other night because it was close, cheap, I didn't want to cook, and they had salads. I ordered a Chicken caeser salad with no chicken and all sauces on the side, a side of veggies and a side of black beans. I asked the cashier/general manager if they were vegetarian (ive had a bad run-in with black beans before) and after she hesitated, she told me they were.
We got our food and I mixed my veggies and a fork full of black beans into my salad. My first bite tasted off, so I tried a bite of the beans itself and I became quite suspicious

. Thanks to the convenience of my blackberry I was able to find more than one website that confirmed that the black beans contained ham (I think they used pork/bacon grease in the lard or something).

Obviously I couldn't eat my food so my BF and I asked for some form of compensation for giving us false information leading to me not eating. She told us no and said that it didn't matter(the general manager I remind you) my BF proceeded to tell her "shes a VEGETARIAN, eating something with meat is kind of a BIG DEAL" and then we left.
When I got home I wrote El Pollo Loco, 1 complained about the service and 2 the inconvenience of being given false information that surprisingly can be a big deal.
Someone wrote me back this morning 'assuring' me there is no ham. I replied with links to various websites I found stating that the beans were NOT vegetarian and to provide me with the ingredients of the black beans and other products that would appear to be vegetarian. She wrote me back again this afternoon just to say "they used to contain lard, I hope this was enough information for you and please continue to eat at El Pollo Loco"
No ingredients... nothing!

This was the first time I even thought about eating at an El Pollo Loco since I was maybe a kid, so its not like I plan on going back. But I do expect some professionalism and if they're going to have to do a lot better job at defending themselves because I don't believe them.
I hate that you can't trust what seems to be 'vegetarian-friendly' food.
I found this website
www.vegetarian-restaurants.net that give you information on vegan/vegetarian foods in chain restaurants.