Because the raw chicken, and there is a difference between seasoning of fried chicken and FRY fren can cook the chicken fat with less options and there is no fren FRY for sale.
Due to the use of raw materials and chicken are different flavor of fried chicken and french fries can be cooked as you like chicken fat, but there are few options, and no selling french fries.
Due to the use of raw materials and chicken are different by the flavor of fried chicken and French fries can be updated as needed, but no less fat chicken options and selling French fries!