1Heat coals or gas grill for direct heat. Cut 18x18-inch piece of heavy-duty foil; spray with cooking spray. Place sweet potatoes and bell pepper on center of foil.
2Mix butter, honey and seasoned salt in small bowl. Drizzle over potato mixture; stir to mix. Fold foil over vegetables so edges meet. Seal edges, making tight 1/2-inch fold; fold again. Allow space on sides for circulation and expansion.
3Cover and grill packet over medium heat 15 to 20 minutes or until sweet potatoes are tender. Place packet on serving platter. Cut large X across top of packet; unfold foil. Sprinkle with chives.