Coming up on fall/winter egg production normally is slow anyway. As others have posted, the amount of daylight has a lot to do with it. They may also start molting, another slow time for eggs. Since yours are still young(ish) they may not be ready yet. Generally, the comb will turn red before they start laying. If any haven't turned yet, it will still be a bit. There's always a bit of discussion around feed. Everyone has their preference and style. The important things with feed that are generally accepted by everyone. The feed has to be fresh. Don't buy more than your chickens can eat in about 30 days. Once grains are milled they rapidly lose nutritional value. It has to be balanced. Wether you buy pellets or crumble make sure it has the nutition they need. Scratch, is a treat and should not be considered feed. Protien, this is the building blocks for growing, eggs, feathers. It's one of the most important (and talked about) numbers on a bag of feed. Chickens have to have protien, how much will vary depending on factors like age, laying, how much free range forage they get. Generally between 16-20%, there are many discussions on this if you're interested. Treats, should be thought of like candy or cake. Everyone eats some, even if they don't like to admit it. Giving treats is fine, and they love it (who can blame them) but it should be no more than 10% of what they are given. There are healthy things to give, also many discussions on the topic. Hope some of this helps. Best of luck.