Trim any excess fat from your boneless skinless chicken thighs.
Thoroughly cover chicken with spice rub.
Place chicken thighs on preheated smoker and smoke at 225°F for about 90 minutes or until the internal temperature reaches 160°F. Baste with BBQ sauce if desired.
Remove from smoker and serve.
Notes
Sugar-Free Option: Want these to be low carb and keto-friendly? Just use a brown sugar sweetener in the rub and brush on some keto bbq sauce.