What aart said.Wonders if they are eating enough of the layer feed(and it's essential vitamins/mineral/amino acids)...with all that other stuff you are feeding them?
Heat can keep them from eating enough too,
Last summer was a scorcher here and feed consumption dropped as did egg laying.
I started to serve them wet feed made with very cold water. It worked they ate more feed and egg production went up. GC

I have had this happen where the eggs are so light in color they almost look white, but when I put them next to my Leghorn eggs I can see the difference. Good luck and have fun...
