1. In a bowl, mix olive oil, garlic, thyme, rosemary, salt, and pepper to make the marinade.

2. Add the chicken breasts to the marinade and coat them well. Let it marinate for at least 30 minutes in the refrigerator.

3. Preheat the grill to medium-high heat. Grill the chicken for about 6-8 minutes on each side or until fully cooked through.

4. Serve the grilled chicken with a side of couscous or roasted vegetables for a complete meal.