LOL , I had my whole flock stop laying when a friend was babysitting and bought the wrong feed. LOL. TRY IT. LOL
I totally agree .Most chickens are birds and the natural order is rare young in the spring . Egg laying is most prolific in the spring and early summer . They can reach sexual maturity late fall early winter. But still not lay until the length of daylight triggers their impulse to reproduce . But take into fact, that almost all our chicken breeds have been cultivated to what they now are . Some will just lay sooner and lay longer than others . Simply brought about by how they are bred . This seems to be a rare year though . I had pullets that should have started in September and didn't. And the ones that started in mid to late summer stopped laying .
So I'm thinking that knowing what you say has truth to . I changed my layer feed to a less expensive brand, late summer . Protein is the same really not that different Also changed my chick starter . And until now it just hasn't occurred to me the feed could be the problem .With what I was feeding before, if they reached 22 weeks by the first of November, They would start laying and lay all winter .I am getting one egg every two days from one young hen .
With all my chickens I'm buying eggs 
Even though your hens may be of age to lay, and the male(s) are going to do their thing anyway, most of my experience states that this is the time of year that is their "off laying" season. They know it's cold and that the sunlight is not as strong or long. Some friends I have that want their hens laying all year, leave a light bulb on inside their coop so that the hens associate with a different time of year. Mine are presently not laying. It's just like how they have a "molting time". I'd just enjoy them and wait until spring. You may have one lay anyway, but I wouldn't expect even one a day from each. Mother Nature is telling them that this is not laying time. Use this time to build nesting boxes (if you don't already have them). They can also serve for the "warmth" that they lack from no heat lamp. I do run a heat lamp to my coop via extension cord. Have a ramp built so that the babies can get from the nesting boxes to the ground without injury. If you build your nesting boxes on the ground, make sure that you are giving the adult hens "oyster shell" to make the eggshell hard. Once they start eating their own eggs because one easily breaks, it is hard to stop them from doing that. This is most common with chickens that do NOT free range, so they aren't getting the calcium to harden the egg shells from eating little frogs, bugs, etc. Don't worry, they'll start laying for you.
