Preheat your oven to 425°F.
In a small bowl, combine lemon juice, olive oil, mixed dried herbs, minced garlic, salt, and pepper to create a marinade.
Place the chicken breast in a shallow dish and pour half of the marinade over it. Let it marinate for at least 15 minutes.
Chop the carrot into sticks and slice the zucchini into rounds. Toss the vegetables in the remaining marinade.
Place the marinated chicken breast on one side of a baking sheet and arrange the vegetables on the other side.
Roast everything in the preheated oven for 20-25 minutes, or until the chicken is cooked through and the vegetables are tender.
Meanwhile, if not already prepared, cook the quinoa according to package directions.
To serve, place a serving of quinoa on the plate, top with sliced chicken breast, and arrange the roasted carrots and zucchini alongside. Enjoy a balanced, flavorful meal.