The number of egg sounds about right to me, too -- actually it is a very good number. The egg laying cycle is about 25 hours, so they should skip a day about once a week. However, egg production can be affected by lots besides feed, including stress, a change in their environment, molting, and other things. It's possible for them to be a bit short on nutrition and still lay well. It makes sense that their bodies might put reproduction ahead of some other considerations.
Their crops should feel full at the end of the day and empty in the morning. Their keel or breast bone, down the center of their "chest," should not be prominent or stick out too much. Their feathers should look healthy and a bit shiny. They should be active and not seem tired or sleepy; they may rest or nap but for the most part they should be up and around during the day.
Mine eat as much as they choose and I really have no idea how much that is, though it is much less in warmer weather when they can find more bugs and forage. Perhaps others here will have an idea about the 80 grams -- although we would need to know their weight and breed -- and your breeds are probably different from ours.