Preheat your oven to 400°F (200°C) and line a large sheet pan with parchment paper for easy cleanup.
Slice the chicken breast into 1-inch strips and chop the zucchini, bell pepper, and carrots into uniform, bite-sized pieces.
In a small bowl, whisk together the olive oil, fresh lemon juice, dried rosemary, dried thyme, sea salt, and black pepper.
Place the chicken and vegetables into a large mixing bowl and pour the herb marinade over them, tossing thoroughly until every piece is well-coated.
Spread the mixture in a single layer on the prepared baking sheet, ensuring there is enough space between the ingredients so they roast rather than steam.
Bake for 20 to 25 minutes, or until the chicken is cooked through and the vegetables are tender with slightly caramelized edges.
Remove from the oven and let rest for 2 minutes before serving to keep the chicken juicy.