A more charismatic version of the term, 'cool beans', seeing as 'chilled' and 'cool are synonyms', and 'beans' and 'legumes' are as well. 'Chilled Legumes' is only the more sexy way to imply that a conversation is coming to an end. Commonly used by awesome people, ghettos, pimps, and the like.
Harvy: So this Saturday, the movies, broha?
Richard: Yeah man.
Harvy: I think I'll buy the popcorn, you sneak in some cheap snacks, comprendo?
Richard: Chilled Legumes.