hai diyaaaaa that is a very good but tough question hmmmmm

chan: korean barbecue!! his meat nghhh (/j) this is mostly because of him grilling meat often in content and his love for meat, also a lovely meal to share with people and him being a social butterfly suits that methinks
minho: jokbal but honestly simply because i associate him with it since he tends to talk about it often, i dont have another reasoning i fear
changbin: hmmm because of his love for pasta he'd be some kind of noodle based meal, maybe bibimbap guksu? spicy sauce but very refreshing, i could picture it well with his rap and appearance being spicy but his personality being refreshing, if that makes sense?
hyunjin: also feel like this is a bit too on the nose but mandu! our dumpling boy, i dont think i could pick anything else sdjhcbj
jisung: bibimbap, a mix of different ingredients to make the perfect meal (mostly saying this because of him being an ace)
felix: korean fried chicken! sort of the same reasoning as chan's, him being a social butterfly and korean friend chicken you tend to share with people (+ his literal ambassadorship lmao)
seungmin: kimchi jjigae, same reasoning as minho sjhdbcjs
jeongin: my instinct is to give him a seafood based meal because of him being from busan, but im also not a fan of seafood and barely eat any so i dont know if i can really assign him one djshcbsj maybe eomukguk? warm and comforting!

i hope these were good answers, tell me if you had any in mind :3