Preheat oven to 375°F (190°C), slice the tops off bread rolls and hollow out the insides, leaving a thick border.
Brush bread rolls inside and out with olive oil and sprinkle with garlic powder.
Place bread bowls on a baking sheet and bake for 10 to 12 minutes until crispy and golden.
In a large pot, melt butter over medium heat, then add chopped onion and garlic; cook 3 to 4 minutes until softened.
Stir in flour and cook for 1 minute to form a roux.
Gradually whisk in seafood stock, heavy cream, and white wine, then simmer for 5 minutes until thickened.
Add Old Bay seasoning, smoked paprika, cayenne pepper if using, salt, and pepper; stir to combine.
Add shrimp, crab meat, and scallops to the pot and cook for 4 to 5 minutes until seafood is cooked through and tender.
Stir in fresh parsley.
Ladle the seafood soup into the crispy bread bowls and garnish with extra parsley.