I was looking on the Web for the one in Ann Arbor to see if I could find out if it and yours are both part of a chain. I couldn't find a site for the place itself, but from restaurant listings where I did find it, it looks like it's called "Bd's Mongolian Barbecue," not "BJ's". And I gather it is part of a chain, but I guess not the same one your BJ's might be on.

The sign high up on the front sure looked like a J to me before, but I'm going to have to take another drive by it for a better look.

I haven't eaten there myself.. I don't eat meat, and there are too many good restaurants around Ann Arbor for me to have gotten around to see what this one might have for a vegetarian!