Penelope could be said to fall into the quirky fat chick-role

And the only time she had an actual hot guy be attracted to her, he turned out to be Evil. When they brought on Nicholas Brandon to be her occasionally-appearing canonical boyfriend (presumably so that viewers would not take the flirting between her and Morgan seriously) they even went so far as to put him in nerd glasses and ugly-ass shirts just to make certain -- so far as I can tell -- that nobody in the audience actually thought for a minute that a quirky fat chick deserved/could ever have a boyfriend whose hotness level exceeded her own.