My favorite "Sam-Gyeopssal" (Korean-style pork BBQ wrapped with vegetables) place in Tokyo (2 branches). Pretty healthy as you consume a lot of vegetables with the meat, and fairly reasonable for its quality and portion. You'd be content unless you dislike pork (just don't go then). Been here 30+ times so far.
My rating: 5.0
#1: DMK Bldg. 2nd floor, 3-16-4 Akasaka, Minato-ku, Tokyo | 03-3589-2389
#2: 3-6-17 Akasaka, Minato-ku, Tokyo | 03-3568-2230
Budget: 4,000 JPY
Open: Mon-Sun 17:00-27:00