This soup is reason number 1,284,735 that I always make extra chicken when I am making chicken for other reasons, because leftover chicken means you can make things like this creamy, dreamy parmesan polenta chicken soup in a snap. If you have ever had a bowl of warm and wonderful polenta, just imagine it in soup form with chicken and baby spinach swirled into it, and a drizzle of olive oil on top. And if you haven't ever had a bowl of polenta...well, you have a great treat to look forward to, because polenta is Comfort Food Extraordinaire. Ready for warm and wonderful soup deliciousness? Let's make it!