Chrome font changed without doing anything..

[Stabulous]

The font on these forums and a few other websites I visit changed sometime in the last few days and I don't know how or why. I use chrome, is there a keyboard shortcut or something that could've done it? Is there a way to put it back to the defaults without wiping everything else? Looking at pictures of trannies and come to red ads isn't the same with a different font above them, thanks.