chick·en /ˈCHikən/ noun. —A domestic fowl kept for its eggs or meat, esp. a young one
The word ‘chicken’ is introduced in episode 5, in context of Dokko’s retelling of “Camellias.” Dokko asks Ae-jung, “What is your chicken?” The ‘chicken’ symbolizes something that is of value to a person. And just like the story, he tells her how because she rejected his ‘potato,’ he will in turn find and torment her ‘chicken,’ whatever that may be. It’s his way of getting revenge because she humiliated him.
He admits that he was up all night thinking of her… her ‘chicken,’ that is. And proceeds to threaten her with the fact that she could get in trouble for attending events without letting the agency know (See: Flyers). He doesn’t go through with it, and ends up throwing the flyer away.
Continuing on that path, his humiliation dies down and his desire to find her ‘chicken’ fades away. It is replaced , once again, by him wanting to offer his ‘potato,’ or in other words, his heart. The word makes its last appearance in their conversation at the movie theater:
Dokko: “Did you run away because you’re scared that I’m going to try and torment your chicken again?”
Ae-jung: “Yeah, I’m scared. Not wanting to run away from your tormenting, and truthfully, not even feeling tormented at all… scares me.”
The word ‘chicken’ goes from representing revenge, to an expression of affection by Dokko when he decides not to find or torment it.
The hilarious part is that ‘chicken‘ appears again in episode 6, in the form of a ‘chicken‘ fight and a ‘chicken‘ CF.