There are a few ways to reheat chicken. 1. In a microwave: place in a microwave safe bowl and cover with a damp paper towel. Heat for 30 seconds on high then stir and repeat if necessary. 2. On the stovetop: Place chicken in a small pot and add a tablespoon of water. Cover with a lid and heat on medium heat for 3-5 minutes, stirring often and checking to make sure there is water. Add another tablespoon at a time if necessary. 3. In the oven: Place chicken in a baking dish, add 2 tablespoons of water and cover with foil. Preheat oven to 325° F and then heat for 5-6 minutes.