Prepare grill to medium-high heat, around 400° Fahrenheit.
Mix the salt, pepper, chili powder, garlic powder and onion powder together in a small bowl.
Lightly coat the chicken drumsticks with oil. Rub the seasoning mix all over the chicken to coat.
Grill on direct heat for about 30 minutes, depending on the size of the drumsticks. Flip every 10 minutes (every 4-5 minutes at the end of the cook time). Cook until the internal temperature of the chicken reaches at least 165° Fahrenheit.
Remove from grill and allow the chicken to rest for at least five minutes. Serve and enjoy!
