Generally they lay their best their first laying season, then after their 18 month molt they decrease their egg production by 25% for the next 2-3 years, then by 10% each year on afterward. That's why some people cull hens after they pass the pullet stage.
Get you a jar of unprocessed, pure, virgin, organic, whatever word you want to use for the most unrefined, natural, coconut oil you can get. It will be solid at a low-70s room temperature about like the inside of an Almond Joy candy bar. At higher temperatures it turns to clear liquid. Set it outside in the sun and let it turn to liquid. Then pour it in a bucket of chicken feed and work it in well and feed your chickens. Give them enough to last them for the day in a feeder. Repeat every few months.
Seems to make them lay well.
Cut out the table scraps, it's not good for them.
True, the preprocessed feed (if made correctly) contains the vitamins, minerals, fat, carbs, and protein needed to grow and produce eggs, but that does NOT mean that "table scraps" are bad (unless of course, every meal you eat is fast-food). You are implying that processed chicken food is higher quality nutrition than fresh/cooked fruits and veggies. Would you say feeding your family preprocessed packaged food is healthier than fresh kale, spinach, watermelon, tomatoes, lettuce, etc?
When my flock has a significant drop in egg production the first thing I do is check for Rat Snakes hiding under the coop bedding or under items in the general vicinity of the coop.
Too early to quit laying, the days are still long enough.
