Mix the dry ingredients. Season the chicken thighs with the seasoning mixture. Be sure to coat both sides of the chicken.
Preheat grill or smoker to 325°F. Once the grill is hot, place chicken thighs onto the grill and cook until the internal temperature reaches 160°F. It will take approximately 40 minutes.
Remove smoked chicken thighs from the grill and let them rest for about 5 minutes then serve.