Tyler Chicken is a food company owned by Johnny Tyler. It is a parody of Tyson Chicken.
In "The Muffin Tops", George Costanza claims to be a hen supervisor for the company while attempting to keep a woman he had recently met interested in him. This eventually leads Steinbrenner to believe he was dividing his time between two jobs by working nights there and working for the New York Yankees during the day. This leads to him being fired or "traded" in exchange for Tyler Chicken providing chicken to the New York Yankees' concessions.