https://www.nutrenaworld.com/product/naturewise-feather-fixer-poultry-feed
I had my hens on this a few months before collecting eggs to incubate. Is it a decent choice?
Looks decent, though you'll note the guaranteed analysis ignores B(any sort) and K. B is water-soluble, so it is often left out of feeds that have oil. Riboflavin is the most common deficiency in layer feed.
It can be found in spinach, dandelions (I think?) and strawberries.
Honestly, I would just buy some vitamin B complex tablets and supplement. They're cheap. Make sure they're low-to-no iron.
EDT: nice protein content, though.