The bones in my cooked chicken are dark gray or black — is that dangerous?

meat thermometer to confirm the correct internal temperature ensures the chicken is cooked safely.

9. Why Dark Bones Happen More in Roasted, Grilled, and Frozen Chicken

Roasting and grilling apply direct heat to the chicken, which can cause the marrow inside the bones to heat up and oxidize, leading to darker bones. This is particularly noticeable in chicken that has been frozen because freezing and thawing can cause the blood in the marrow to move and oxidize upon cooking.