Possibly. It's never a good idea to eat food that has spoiled.
Unless the oven maintained a product temperature of 140° or more during that time, no food safety person would tell you that it is OK to eat. It could be all right, but there's no way to tell and it just isn't worth the risk.
Addition: but what about putting it in chicken pot pie? see discussion piece for details. thx.
1-2 days in the fridge or 3 months in the freezer.
Well amphibians are animals so yes
Properly cooked chicken which has been properly frozen and properly defrosted is perfectly fine to eat. It can be heated or not, as the user prefers.