You crack me up!
Remember: Nothing is ever wasted in Nature. If you have a gardening failure - just turn it into compost. :)
The total supplementation of table scraps and scratch grains should be no more than chickens can finish in 20 minutes.
https://poultry.extension.org/articles/feeds-and-feeding-of-poultry/feeding-chickens-for-egg-production/#:~:text=Chickens%20are%20often%20fed%20table,can%20finish%20in%2020%20minutes.
20 minutes? My daughter and I had a good laugh about that one. Unless it's a big batch of fish I pressure cook for the chickens (softens the bones), anything from the kitchen or dinner table that we take out to our chickens is demolished in 20 seconds or less...