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.
3. Parsley. Parsley is a favorite of my chickens. They will eat the stems and leaves fresh from the garden. A nutritional powerhouse, parsley contains vitamins A, B, C, E and K, as well as calcium, iron, magnesium, selenium and zinc. It aids in blood-vessel development and also stimulate egg-laying.