This is a mix of Chrome's (horrible) font rendering and the type hinting of the font. Arial is TrueType, which in comparison to the (now exceedingly popular) OpenType is rendered differently (since the type hints are specified in different formats).
Disclaimer: I'm not a type designer, these suggestions are based on my experiences as a web designer.
You might want to try:
Increasing the font size. At larger font sizes there are more pixels available and the font will be rendered smoother.
Experiment with -webkit-font-smoothing
. In particular you might want to try specififying antialised
or subpixel-antialiased
to see if it helps. Reference MDN. However, note that this is non-standard (not in the W3 spec) so consider this carefully.
Modify the font to suit your needs. If you feel comfortable around fonts, try modifying the hinting to be suit your needs. A simpler alternative might be to convert the fonts to TrueType if you prefer the TrueType rendering.