Preheat your oven to 400°F (200°C).
Prepare a baking dish by lightly greasing it with olive oil.
In a large bowl, combine asparagus, baby carrots, cherry tomatoes, garlic, olive oil, and lemon juice. Season with salt and pepper.
Spread the seasoned vegetables evenly in the prepared baking dish.
Place the cod fillets on top of the vegetables in the baking dish.
Drizzle olive oil over the cod and sprinkle lemon zest, salt, and pepper on top.
Bake in the preheated oven for 20-25 minutes, or until the cod is opaque and flakes easily with a fork.
Remove from the oven and let it rest for a few minutes before serving.
Garnish with freshly chopped parsley before serving.