Diggers are going to get into your coop and get to your chickens. Also, The color of the waddles is not normal. it's too pale. Usually pink waddles is a sign of anemia brought on by worms. Take a poop sample to the vet. or at least get some DE and mix with their food. The DE will help with worms. Now, It could also be a sign of other things. I would give the chickens vitamins, especially calcium. Lack of calcium could be the reason they're not laying eggs. They may be laying shelless eggs. Looking at the pic, that's not a good chicken diet. It's a good treat, but that's all. Look at their feathers, they look horrible and lackluster. The waddles and feathers are a definite sign something is wrong. I'll bet their poop is not a firm ball but a stinky brown puddle. If you don't fix this they'll be dead in a couple weeks. Look at my pic's. That's what a healthy RSL looks like.