Here's the problem: a coffee pot gets hotter when there's water going through it.

The same heating element that warms the bottom of the carafe also heats a small section of tubing meant to boil water. This, along with a simple check valve, forms a bubble pump, which is how the hot water gets up to the coffee grounds.

There's a thermal switch that allows full power when that coil of water is below a certain temperature, and when it gets hotter than that, it switches to a lower power mode, because with no water to boil, all it needs to do is keep the carafe warm. I don't have the numbers in front of me but I doubt it would get hot enough to properly cook chicken.