01 - Preheat the oven to 425°F. Line a large sheet pan with parchment paper or aluminum foil to simplify cleanup.
02 - Combine 2 tablespoons olive oil, kosher salt, black pepper, thyme, rosemary, lemon zest, and minced garlic in a small bowl, mixing thoroughly.
03 - Pat the turkey breast dry with paper towels. Evenly coat the turkey breast with the marinade, making sure to rub under the skin when possible.
04 - In a large bowl, toss halved baby potatoes, carrot pieces, and red onion wedges with 1 tablespoon olive oil, kosher salt, and black pepper until well coated.
05 - Spread the seasoned vegetables evenly on the prepared sheet pan. Place the turkey breast in the center, skin side up.
06 - Roast in the preheated oven for 40 to 50 minutes, or until the internal temperature of the turkey reaches 165°F and the vegetables are tender and golden.
07 - Remove from oven and let the turkey breast rest for 10 minutes before slicing to retain juices.
08 - Slice the turkey breast and serve alongside the roasted vegetables. Optionally garnish with lemon wedges and fresh herbs.