01 - Set oven to 400°F and line a large sheet pan with parchment paper.
02 - Mix olive oil, lemon juice, lemon zest, garlic, rosemary, thyme, salt, and black pepper in a large bowl. Coat turkey breast thoroughly and marinate for 15 minutes or refrigerate up to 2 hours for richer flavor.
03 - In a separate bowl, toss potatoes, carrots, bell pepper, zucchini, and onion with olive oil, Italian herbs, salt, and pepper until evenly coated.
04 - Spread the vegetables in a single layer on the sheet pan, leaving space in the center for the turkey.
05 - Position the marinated turkey breast in the center of the vegetables on the pan.
06 - Roast for 35 to 40 minutes until the turkey's internal temperature reaches 165°F and vegetables are tender and caramelized.
07 - Remove from oven, loosely cover with foil, and allow to rest for 5 to 10 minutes before slicing.
08 - Slice turkey and serve alongside roasted vegetables. Garnish with additional lemon zest or fresh herbs as desired.