Problem - after updating to the latest Chrome version (37), fonts look ugly.
v37 is supposed to introduce DirectWrite for font rendering, that makes fonts look better.
I’m using a non-standard 125% Windows DPI, it could be why they are ugly for me.

Solution, as quoted from here:

type "chrome://flags/#disable-direct-write" in your Chrome window and click "Enable" on "Disable DirectWrite". DirectWrite should be off.