Preheat oven to 400°F.
In a bowl, mix lemon zest, lemon juice, olive oil, garlic, rosemary, thyme, salt, and pepper.
Place chicken breasts in a baking dish and pour half of the lemon herb marinade over them. Let marinate for 10 minutes.
In a separate bowl, toss baby potatoes, bell pepper, zucchini, and baby carrots with remaining marinade and oregano.
Arrange the vegetables around the chicken in the baking dish.
Bake uncovered for 30-35 minutes, or until the chicken reaches an internal temperature of 165°F and vegetables are tender.
Garnish with fresh parsley before serving.