If you’ve ever bought frozen chicken breasts and wondered how long it would take to cook them, you’re not alone. Many of us have frozen chicken breasts and chicken parts in our freezer at one time or another. There are different ways to prepare chicken, but one of the easiest and fastest ways to defrost chicken is in the microwave. Place the chicken parts in the microwave and set it to defrost. Microwave for one minute at a time, then add a few more seconds.