Heat gas or charcoal grill. In small bowl, mix oil and garlic. Brush chicken breasts with 1 teaspoon of the oil mixture; sprinkle with seasoned salt. Place on grill over medium-high heat. Cover grill; cook 12 to 18 minutes, turning once, until juice of chicken is clear when centre of thickest part is cut (170°F). Reduce heat to medium-low.