Slow Cooker Dijon-Maple-Rosemary Chicken

Simple, easy, delicious!  This is yet another wonderful dish for one of those busy, busy days.  Enjoy!
-cooking spray
-4 bone-in, skin-on chicken thighs
-3/4 cup Dijon mustard
-1/2 cup pure maple syrup
-2 Tbs red wine vinegar
-1 tsp salt
-1 tsp pepper
-2 tsp dried rosemary leaves
Coat your slow cooker with cooking spray.  Layer the chicken on the bottom.  Combine remaining ingredients and pour over chicken.  Cover and cook on low for 4 hours.  Enjoy!