Chiken is a normal sized, although a bit chubby woman, with dark curly hair and a round-ish face. She seems to be middle-aged as her face have some wrinkles on it. She wears a dark colored vest over a white shirt with the sleeves rolled up. In the anime, she wears a reddish 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 waved goodbye to Luffy when he departed Foosha Village.