Spray inside of slow cooker with non-stick coating spray. Add marinated chicken to the slow cooker and cook on low for 1-2 hours or high for 1 hour stirring once or twice until cooked through.
Combine sauce ingredients in a bowl and pour over all the ingredients in slow cooker. Cook on high for 30 minutes - 1 hour or low for 1.5 - 2 hours, stirring occasionally to distribute the sauce evenly.