I don't fuss much with special foods or particular ratios of things .... when they are peeps - I do give them mostly grower with treats and extra food from the house.
When they are teens, I give them stale crackers (natural brand - flour, oil, ect) and free range buffet .... with maybe once a week some layer, not even calcium as they free range and pick up all they need from bugs and rocks.
Never had an issue - always had good layers UNTIL THIS YEAR ! None of my peeps have grown up to be a layer yet - mostly I start getting eggs from this process about Sept, but certainly Oct .... and only a skinny leghorn broody - Momma Chickie - is giving me an egg now .... I bought her as a full grown momma hen. I try to feed her extra, I baby her as much as I can and she is still skinny, icky butt (washed twice) and popping out a grade extra large egg a day. Sheesh - I got her just because she went broody and I wanted a proven mother - turns out she is the only one giving me breakfast !
Anyway - point is - it must be something in the rain, sun, angle of the earth - as so many have buggies and no eggs and trouble with hatch rates .... it all seems to be a pattern.
Maybe those alien Silkies are putting their plot in motion ......