01 - Preheat the oven to 400°F. Line a large baking sheet with parchment paper.
02 - In a bowl, toss baby potatoes, carrots, bell pepper, and zucchini with olive oil, sea salt, black pepper, and oregano. Spread evenly on the prepared baking sheet.
03 - Roast vegetables in the oven for 10 minutes.
04 - While vegetables roast, pat cod fillets dry. Combine olive oil, lemon juice, lemon zest, sea salt, black pepper, parsley, and thyme in a small bowl. Brush this mixture evenly over the cod fillets.
05 - Remove the baking sheet from the oven after 10 minutes. Move vegetables to the sides and place cod fillets in the center.
06 - Return the baking sheet to the oven and bake for 12 to 14 minutes, or until the cod flakes easily with a fork and vegetables are tender.
07 - Serve the cod and roasted vegetables immediately, optionally garnished with extra parsley and lemon wedges.