Yeah, these fonts look crap (compare them with the ones on toolbar on the top), I havent used chrome/chromium on FreeBSD, but latest Opera 10.6x has the same problem and I havent found a fix since 'new' Opera omits all config files that are responsible for font renderring (~/.fonts.conf / ~/.Xdefaults), so I just stick to Opera 10.10 now.
I have even submitted a BUG to Opera team, maybe Opera 11 would be better ...