01 - Preheat oven to 425°F. Line a large sheet pan with parchment paper or foil.
02 - Toss halved potatoes with 1 tablespoon olive oil, ½ teaspoon salt, and pinch of pepper. Spread on sheet pan.
03 - Roast potatoes for 15 minutes.
04 - Mix corn, sausage, and onion with 1 tablespoon olive oil, 1 teaspoon Old Bay, and ½ teaspoon smoked paprika.
05 - Add corn, sausage, and onion to sheet pan with potatoes. Roast 10 minutes.
06 - Toss shrimp with remaining olive oil, Old Bay, paprika, garlic powder, salt, and pepper.
07 - Nestle shrimp among ingredients. Roast 5–7 minutes until pink and cooked through.
08 - Sprinkle with parsley. Serve immediately with lemon wedges.