In Shin-Ōkubo's Koreatown, Shin-chan specialises in spicy Korean-style fried chicken, sold by the half (from ¥1400) or whole (¥2485) bird. There's a picture menu with handy chilli peppers to advise you on spice level; everything is meant to be shared and comes with free pickles and cabbage. There are very twinkly blue lights out front (and often a line).
Shin-chan
Shinjuku & Northwest Tokyo