I'd almost feel sorry for Zach if it wasn't for the fact that he's an ass. I'd also almost feel sorry for Adam, except for the fact that he's fully realized how shallow she is.
She pretty much throws herself at pretty boys. Do we dare hope she learns ANYTHING from the Fatlena episode? Even if Adam somehow were the only one to be nice about Fatlena (unlikely), she obviously has zero attraction for him, or any of the truly Average Joes (I'm disincluding Mr. Tan, Zach)
My bet is that ALL of the guys act nasty about Fatlena and the net effect is zero, except possibly for some extra level of disillusionment about Zach.