01 - Preheat oven to 400°F. Line a large sheet pan with parchment paper or lightly grease with cooking spray.
02 - In a small bowl, whisk together 3 tablespoons olive oil, lemon juice, lemon zest, minced garlic, chopped rosemary, chopped thyme, 1 teaspoon salt, and ½ teaspoon black pepper until well combined.
03 - Pat the turkey breast dry with paper towels. Place on the prepared sheet pan and rub the herb mixture evenly over all surfaces of the meat.
04 - In a separate bowl, combine the halved baby potatoes, carrot sticks, and onion wedges. Drizzle with 1 tablespoon olive oil and toss with ½ teaspoon salt and ¼ teaspoon black pepper until evenly coated.
05 - Arrange the seasoned vegetables around the turkey breast on the sheet pan, ensuring even distribution for consistent cooking.
06 - Roast for 45–55 minutes, stirring the vegetables halfway through cooking. Continue until the turkey reaches an internal temperature of 165°F and vegetables are tender and lightly browned.
07 - Remove from oven and let the turkey rest for 5–10 minutes before slicing. Serve with the roasted vegetables and spoon pan juices over the top.