That's pretty much what I would do, too, scarey. Contact the company and tell them that your rep tricked 2 vegetarians into eating chicken and that the act was NOT APPRECIATED. Make sure they know that no one is considering lawsuits (yet), but the rep has broken trust, so you would like a new rep to service the account since there's NO WAY you can trust the current rep to do what he says he will do or will not do.
But if you don't have that kind of authority (and most of us do not), I would simply never never never eat again what that rep has brought in for the company. If he asks why, simply tell him "You tricked me and one other vegetarian into eating chicken. I do not eat chicken and thanks to you, I was very very ill for days following (ok, you may not have been physically
ill, but you were emotionally ill and in my book: it's the same thing). I have come to the desision that since you do not know the difference between vegetarian and non-vegetarian items, and since you think it's funny to trick someone into eating something they don't normally eat which is a very dangerious practice what, with people that are FATALLY ALLERGIC TO THINGS AND WHATNOT (stressing those words to him and hoping he gets it), I will simply avoid any and all things you bring in from now on".
But speeches aside, I send you
for what you had to put up with.
Some people's kids. You can't live with 'em, and you can't
them when you want to!