The wider pinned tabs, while ugly, I can deal with. This font nonsense, I cannot. If this is going to be rolling out to all of Chrome eventually, I will be switching to Safari. Or back to Camino. Ugh.
Update: From my Google+ thread on the matter:
Chromium just switched to using Skia as the rendering engine on Mac instead of Core Graphics. They don’t have sub-pixel anti-aliasing working yet, which is why it looks asstastic but they do have accelerated graphics, now. They won’t launch until there is no discernable difference with CG, though.