Whisk all of the ingredients together in a large bowl making sure to eliminate any lumps.
Store in a jar with a tight-fitting lid. When making ahead or saving leftover rub, I like to store in the refrigerator to prevent the brown sugar from drying out and clumping.
When ready to grill, sprinkle each chicken piece (or your protein of choice) with 1/2 to 1 tablespoon of the rub, depending on size. The rub is designed to add great flavor when sprinkled on just prior to grilling, but it may be done several hours in advance. Cover and refrigerate the pieces in that case.
This rub will add excellent flavor as is but may also be combined with a finishing brush of your favorite barbecue sauce.