Preheat your oven to 425°F (220°C) and line a baking sheet with parchment paper.
Wash and cut the red potato into wedges. Toss the wedges in half of the olive oil, and season lightly with salt and pepper.
Place the potato wedges on the baking sheet in a single layer. Roast in the oven for 25-30 minutes, turning halfway, until golden and crispy.
Meanwhile, pat the cod fillet dry with paper towels. Drizzle with the remaining olive oil, and season with salt, pepper, and a squeeze of lemon juice. Optionally, add a pinch of lemon zest and fresh dill for extra flavor.
Place the seasoned cod on a separate lightly greased baking dish. Bake in the oven for 12-15 minutes, or until the fish flakes easily with a fork and has a crispy exterior.
While the cod and potatoes are baking, prepare the dip by mixing the Greek yogurt with a small squeeze of lemon juice, a pinch of salt, and some chopped fresh dill.
Once cooked, plate the crispy baked cod alongside the roasted potato wedges. Serve with the lemon-dill Greek yogurt dip on the side.
Enjoy this nutritious, well-balanced meal that perfectly fits within your protein and calorie goals.