Chicken a la King is a recipe consisting of diced chicken in a cream sauce, and often with sherry, mushrooms, and vegetables, served over rice, pasta, or bread. most likely account is that Chicken à la King was created in the 1890s by hotel cook William "Bill" King of the Bellevue Hotel in Philadelphia. Several obituaries in early March 1915 credited King after he died on March 4, 1915. A New York Tribune editorial at the time of King's death stated.