I found a solution.
A few days ago fonts in IE8 and Chrome became italicized, but only on one site: myfitnesspal.com. I am using Windows 7. I've talked to the admin on that site and they said it was more of a unique situation so I decided to take it into my own hands.
The past 2 hours I have browsed for solutions and tried all sorts of options, re-installing the browsers and replacing the Arial regular font (I tried to delete it and re-install, but it said it was protected). I've also been to Internet Options in IE to choose the webpage fonts and that still hasn't worked.
Also, in Firefox the font is bolded instead of italicized (on the same site), but not anywhere else. Perhaps it has something to do with CSS? Has anyone encountered this or have any suggestions?
FYI, I am on a work computer and funny that I work in IT, but can't fix my own sh*t!