Preheat your oven to 375°F (190°C). Pat the turkey breast completely dry with paper towels to ensure a beautiful golden roast. In a small bowl, whisk together the olive oil, minced garlic, chopped rosemary, thyme, salt, and pepper. Place the turkey breast in the center of a large rimmed baking sheet or roasting pan. Rub half of the garlic-herb mixture all over the turkey, ensuring it is well-coated on all sides.

Place the turkey in the oven and roast for about 30 minutes. While the turkey is roasting, toss the fresh green beans in a bowl with the remaining garlic-herb mixture. After the initial 30 minutes, remove the pan from the oven and arrange the green beans and lemon slices around the turkey. Return the pan to the oven and continue roasting for another 25 to 30 minutes, or until the internal temperature of the turkey reaches 165°F (74°C) and the beans are tender-crisp.

Once the turkey is finished, remove it from the oven and transfer it to a cutting board. Let the meat rest for at least 10 minutes; this allows the juices to redistribute, keeping the meat moist. Slice the turkey into thick medallions. Serve the turkey alongside the roasted green beans and charred lemon slices. Drizzle any remaining pan juices over the meat for an extra boost of flavor.