Preheat oven to 200°C (390ºF). Place 2 sprigs of thyme on each chicken breast and sprinkle with salt and pepper. Wrap a piece of prosciutto around each chicken breast. Place the chicken in a baking dish and sprinkle lightly with olive oil. Bake for 18–20 minutes or until chicken is cooked through. Serve with the brown-buttered beans. Serves 6.