There are a lot of factors that determine the amount of feed a particular chicken needs; the size of the chicken, the sex of the chicken (laying hens need more than a rooster for example) their keeping conditions and their access to foraged food and the quality of that forage, the quality a composition of the provided feed, to cite a few.
My advice would be to scrap all the extras and just feed a good quality commercial feed with a protein content of 18% to 20% for a while.
Check each fowls crop at roost time to make sure that all your chickens are roosting with a full crop and all are getting equal feeding opportunities. Adjust feeding routines as necessary. I would do this for a month.
At the end of a month of this regime you will know how much feed your chickens consume on average.
After this if you wish to reintroduce treats, moderation is good and good quality treat food such as fish or meat make an excellent supplement.
My advice would be to scrap all the extras and just feed a good quality commercial feed with a protein content of 18% to 20% for a while.
Check each fowls crop at roost time to make sure that all your chickens are roosting with a full crop and all are getting equal feeding opportunities. Adjust feeding routines as necessary. I would do this for a month.
At the end of a month of this regime you will know how much feed your chickens consume on average.
After this if you wish to reintroduce treats, moderation is good and good quality treat food such as fish or meat make an excellent supplement.