The definition and abbreviation for Potentially Hazardous Food (Time/Temperature Control for Safety Food) or PHF/TCS should be modified to drop the reference to potentially hazardous food and PHF.
Yes, as a treat apples are fine for chickens. Some will say it is best not to feed them too many apples as the seed of an apple has a small amount of arsenic in it. I have an orchard on my property and in the fall, the chickens run there first thing in the morning. Never had a chicken drop dead under an apple tree.
Chickens will eat bugs,mice,moles and frogs,but NOT table meats and is not in their normal diets and feeding them turkey meat is just wrong.Also chickens do not eat goats,sheep or cows and you should never find animal byproducts in a good feed.