I never thought I'd ask this, as I'm of the school of thought that when in doubt, throw it out. But this seems on the cusp to me. I had a rock-hard chicken breast from the freezer. It did not thaw overnight in the fridge. I know you're not supposed to do this, but I decided to give it a head start on the counter and then put it back in the fridge. By the time I got to it the chicken was thawed but cold. Is it safe to cook or should I pitch it? I lean toward the latter.