Chiken is a normal sized woman, with dark curly hair and a round-ish face. She wears a dark colored vest over a white shirt with the sleeves rolled up. In the anime, she wears a redish brown apron.
She was seen taking care of the store, happily, and waving goodbye to Luffy. She seems like a caring person.
When Luffy bought a fish as a child, she was seen in the store working. She was not seen again until Episode 504 when she was waving goodbye to him in Luffy's flashback.