Not sure of the intent of the post. I’ve never heard of a Church’s serving anything but chicken since I was a kid and grew up a block away from Mr. Church’s first location in San Antonio.
Chicken, like oil, is fungible. I still drive a car, even though the petroleum products may be derived from Arabia.
I’d rather the profits on the chicken not go to Saudis. Chicken as a raw material may be fungible, but as sold in a fast-food restaurant it is a product, it is not particularly fungible, and choices consumers make do matter.