What's "too hard"? And what colour are they? Normal poops on raw should be solid pellets. If they are hard and all white, then too much bone. You may need to add extra muscle meat if you are feeding parts of the chicken that don't have a lot of meat on them, like the back and the wings as individual meals.
BH, OB1, TR1, AD
Rottweiler/Hairy Dog mix?? Shelter rescue
Gryffon Vom Wildhaus