01 - Preheat the oven to 400°F. Line a large baking sheet with parchment paper.
02 - In a bowl, toss the halved potatoes, sliced carrots, bell pepper strips, and zucchini with 2 tbsp olive oil, 1 tsp sea salt, ½ tsp black pepper, and 1 tsp dried oregano. Spread the vegetables evenly on the baking sheet.
03 - Roast the vegetables for 10 minutes to begin softening.
04 - While vegetables roast, pat the cod fillets dry. In a small bowl, combine 2 tbsp olive oil, lemon juice and zest from 1 lemon, 1 tsp sea salt, ½ tsp black pepper, chopped parsley, and thyme. Brush this mixture evenly over the 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, or until the cod flakes easily with a fork and the vegetables are tender.
07 - Serve immediately, optionally garnished with extra parsley and lemon wedges.