Prepare the Marinade : In a small bowl, whisk together olive oil, lemon juice, lemon zest, minced garlic, oregano, thyme, salt, and pepper.
Marinate the Salmon : Place salmon fillets on a lined baking sheet. Spoon the marinade generously over each fillet. Let rest for 10–15 minutes while preparing vegetables.
Prepare the Vegetables : In a large bowl, combine broccoli, zucchini, tomatoes, bell pepper, and carrots. Drizzle with olive oil, garlic powder, Italian herbs, salt, and pepper. Toss to coat evenly.
Arrange and Bake : Spread vegetables around the salmon on the baking sheet. Bake in a preheated oven at 400°F (200°C) for 20–25 minutes, or until salmon flakes easily with a fork and vegetables are tender.
Serve : Plate salmon with a generous portion of roasted vegetables. Squeeze fresh lemon over the top if desired.