Slow Cooker Dijon-Maple Chicken

I don't think you can really take good pictures of slow cooker food...  That said, this is a very  nice dish.  Quick to put together and very tasty.  Enjoy!
-4 chicken thighs, bone-in, skin-on
-1/2 cup dijon mustard
-1/4 cup real maple syrup
-1 Tbs white wine vinegar
-1 tsp salt
-1 tsp pepper
Coat the bottom of your slow cooker with cooking spray.  Add the chicken thighs.  Mix remaining ingredients and pour over thighs.  Turn the chicken so that it is completely covered in the sauce.  Cover and cook on low for 4-5 hours.  Enjoy!