If your birds are all production reds then they'll be closer to 1/4 pound per day per bird. Larger dual purpose birds consume closer to 1/3 pound due to needing extra to grow and maintain that added body mass. Also you noted they just started to lay so counting back two months from now they didn't eat as much as they do now...adding up both those things I'd safely say they are perfectly healthy and right on track in eating amounts.
Pot ash is a good deterrent of parasites. I may some day have to deworm my birds but never have in 5 years of keeping birds. They like to dust bath so either use the spot they already picked out or make a dust bath area in run with something as simple as an old tire. Fill with sand and mix in ample amount of wood ash (I use 1/3 ash or more to rest sand). The ash works like DE in that it aids in deterring infestations of internal and external parasites.
Pot ash is a good deterrent of parasites. I may some day have to deworm my birds but never have in 5 years of keeping birds. They like to dust bath so either use the spot they already picked out or make a dust bath area in run with something as simple as an old tire. Fill with sand and mix in ample amount of wood ash (I use 1/3 ash or more to rest sand). The ash works like DE in that it aids in deterring infestations of internal and external parasites.