Zygote: A fertilized egg. Our modern understanding of changes that take place within the embryo can be traced to the rise of the cell theory in about 1838. Scientists finally discovered the process by which sperm cells from a male and egg cells from a female combine to form a zygote.
A diet of only chicken and fruit might help you lower your cholesterol levels because it does not include cholesterol-raising trans fats from partially hydrogenated oils, such as those in processed snack cookies or crackers and fried foods.
Just like you wouldn't be healthy if you ate nothing but potato chips, your chickens won't be healthy if they eat nothing but scratch. Feel free to treat them with it, but make sure you also provide real layer feed, as much as they want, so they get enough protein and nutrition every day to stay healthy.