DH got some chicken out of the freezer late last night, and for some reason put it in the (cold) oven to keep it off the worktop. We both forgot about it this morning so it got left in there all day instead of being put in the fridge. So it's now about 21 hours since it came out of the freezer, and it hasn't been in the fridge at all. Safe to eat? Or should I bin it?