The term "chow belle" is likely derived from the word "chow", which is a slang term for food, and the word "belle", which is a term used to describe a beautiful woman. The term "chow belle" was first used in the early 1900s, and it has remained in use ever since.
Today, the term "chow belle" is still used, although it is not as common as it once was. It is still sometimes used in a derogatory way, but it can also be used in a more positive way.