This skillet chicken has a delicious sauce, perfect for soaking bread or a side. If you wanted to perk this up with a bit of heat you could add some sriracha sauce or other hot sauce to the simmering spinach mixture. Use any kind of mushrooms you like, and feel free to switch up the greens. Chopped collard greens or baby kale would be good here as well. You could also add in a few tablespoons of parmesan or fontina or another more flavorful cheese along with the creamy mozzarella. Serve this with something to soak up the luscious sauce, like rice, potatoes, pasta, or grains, and you can add a salad, but there are quite a few vegetables built right into this dish It also reheats nicely over medium low heat.