Do you think it's safe to cook chicken in a cast iron skillet?

I'm new to cooking. I just bought a new cast iron skillet.


I'm wanting to use it to cook chicken, because it can withstand high heat. Apparently, that's the best way to cook a chicken breast - high heat and fast.

The makers of the skillet recommend hand washing and light seasoning with oil after each use. Will the hand washing be enough to kill the bacteria from the chicken? Or, did most of the bacteria die after being in the oven at high heat?