Preheat the oven to 400°F (200°C).
In a small mixing bowl, whisk together the olive oil, minced garlic, oregano, thyme, lemon juice, lemon zest, salt, and pepper.
Place the chicken breasts in a single layer in a glass baking dish.
Brush the marinade evenly over both sides of the chicken breasts.
Bake for 18 to 22 minutes, or until the internal temperature reaches 165°F (74°C) using a meat thermometer.
Remove the chicken from the oven and allow it to rest for 5 minutes to retain juices.
Garnish with crumbled feta cheese and sliced kalamata olives.
Serve each chicken breast with a side of fat-free Greek yogurt for maximum protein content.