Poor rendering of non-standard fonts in Chrome on Windows
I have read that Chrome (originally Chromium) has anti-aliasing issues that's why it's jaggy.Using font-faces also makes a difference than using local fonts in your system. So, all we can do is just wait until they fix this issue or help the Chromium Project if you can.
Copying my anwswer from Making CSS3 @font-face font rendering play nice with ClearType on Windows
A similar question here: Font-face embedded fonts look fuzzy in Windows 7 browsers got an answer that solved the same issue for me.
The fontsquirrel font generator http://www.fontsquirrel.com/fontface/generator optimizes fonts and adds them with hinting/rendering info that helps the windows font rendering engine render them better. It also generates smaller files, which will download faster.