Preheat the oven to 375°F (190°C). Lightly grease a baking dish.
In a bowl, combine crabmeat, breadcrumbs, mayonnaise, Dijon mustard, lemon juice, Worcestershire sauce, garlic powder, paprika, salt, and pepper.
Butterfly the shrimp by cutting along the back and gently pressing them open.
Place the shrimp on the baking dish, cut side up, and spoon the crabmeat mixture onto each shrimp.
Drizzle melted butter over the shrimp and bake for 15-18 minutes until golden and cooked through.
Garnish with fresh parsley and serve with lemon wedges.