There are a few different ways that you can defrost your frozen chicken chili. You can either let it thaw in the fridge overnight, or you can place the chili in a bowl of warm water for about an hour. If you’re in a hurry, you can also microwave the chili for a few minutes until it’s thawed out. Once the chili is thawed, you can then heat it up on the stove until it’s hot and ready to serve.