It's best to limit that stuff. Feeding a higher protein feed can offset some lower protein items in the diet and prevent deficiencies.
All Flock is a type of feed, formulated to be fed to multiple poultry species that are 8 weeks and older, it's a one size fits all ration. Add a separate bowl...
Are you feeding a layer ration? Sometimes they can get too much calcium. Otherwise things like bronchitis, incorrect lighting and running out of water can be other reasons.