01 - Preheat 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 2 tbsp olive oil, 1 tsp sea salt, ½ tsp black pepper, and dried oregano. Spread evenly on the prepared baking sheet.
03 - Roast the vegetables in the oven for 10 minutes.
04 - While vegetables roast, pat the cod fillets dry. In a small bowl, combine 2 tbsp olive oil, lemon juice, lemon zest, 1 tsp sea salt, ½ tsp black pepper, chopped parsley, and thyme. Brush this mixture evenly over the cod fillets.
05 - Remove the baking sheet from the oven. Push the roasted vegetables to the sides and place the cod fillets in the center.
06 - Return the baking sheet to the oven and bake for 12 to 14 minutes, until the cod flakes easily with a fork and the vegetables are tender.
07 - Serve immediately, garnished with extra parsley and lemon wedges if desired.