Who invented the chicken filet?

There isn't a single person credited with inventing the chicken filet. It's more of a gradual evolution:

* Chicken breast: The concept of eating chicken breast itself has been around for centuries.

* The "filet" concept: The idea of taking a specific cut of meat and preparing it as a "filet" (a thin, boneless piece) became popular in the late 19th and early 20th centuries, especially with beef.

* Commercialization: Fast food chains like McDonald's and Burger King popularized the chicken filet in the 1970s and 1980s, making it a widely available and familiar food item.

So, while there's no single "inventor," the chicken filet's rise in popularity is due to a combination of factors: the availability of chicken breasts, the popularity of the filet concept, and the drive of fast food chains to create convenient and marketable menu items.