Rinse chicken and pat dry. In a shallow glass bowl combine the onion, salt, pepper, honey, ketchup, sugar and soy sauce. Mix all together. Add chicken, stir to coat. Cover and marinate in refrigerator for 30 minutes.

Lightly oil grill and preheat to high

Remove chicken from marinade and grill over high heat for 15 minutes each side or until juices run clear.