What a tragedy! I am so very sorry this happened to your chickens. I would be devastated!
I would be cautious about using anything a raccoon has touched. Aside from other diseases, they carry a roundworm that can be very dangerous to humans. The risk is small, but still exists. In theory, as long as you clean, process, and cook your meat thoroughly, it shouldn't be a problem. But please do be careful. If there are any raccoon feces in your coop, definitely wear gloves and clean everything well so that you don't accidentally come in contact with anything.