Never tried it, but I know they have takoyaki at Ebisu Ramen in Fountain Valley(okonomiyaki as well, though it comes pre-made). Takoyaki also available at Kappo Honda just up the street and I believe Shin Sen Gumi Grill also has it. Never tried it at any of these places so don't know if they're good, but you've certainly got some options just in that little area alone.