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.
When left to their own scavenger instincts, being the omnivores they are, chickens eat bugs, worms (and even snakes if given the opportunity), grasses and nutritious herbs such as plantain leaves and wilted nettleâboth of which boost egg production and yolk hue.