Combine melted butter and seasonings in a small bowl.
Brush the butter mixture onto the turkey legs and set aside.
Allow the turkey legs to come to room temperature while you preheat the grill to 400° F.
GRILL TURKEY LEGS:
Spray the entire turkey leg with cooking spray and place it directly onto the grill over direct heat.
Repeat with the remaining turkey legs.
Rotate the legs a quarter turn every 5 minutes to sear the outside of the legs.
Turn the grill down to 300° F (indirect heat) and cook until the internal temperature is 165° F. Continue to rotate legs every 5 minutes while cooking.