I do not.  However, it is for an entirely different reason:  I do not buy store chicken.  All of the chicken I eat are mine ('extra' roosters and older hens)  I feel it would be wrong to feed them their friends.  Besides, I eat all of what I make/cook, even making broth and/or chicken soup with the remains...so there would be little if anything nutritious left.  Plus, cooked chicken bones is a bad combination with a dog.  He (Elroy) does peruse the chicken run on occasion - especially in the evening - we put him on rat duty!  And, he is good around the chickens - though it is still only when we are out and around that he gets to be in the chicken run!
That said, I think no less of you for doing so - nor should you think less of yourself.  You and 
@BY Bob can choose to do what you feel is right (just as I do for myself), and no one should judge, since neither of you are neglecting nor harming your feathered friends.  So, the real question is:  can you live with what you have done?  If so, fine - drop it.  If not, okay, don't beat yourself up - what is done is done, so, drop it! 
(See:  all is okay!  Let it pass from your mind either way!)