Preheat the oven to 375°F (190°C).
Butterfly the shrimp by cutting along the back without slicing all the way through.
Lay the shrimp flat on a baking sheet, cut-side up.
In a bowl, mix the crab meat, panko, mayonnaise, Dijon mustard, parsley, garlic powder, Old Bay seasoning, melted butter, and lemon juice.
Spoon the stuffing onto each shrimp, pressing gently to adhere.
Drizzle shrimp with olive oil and season with salt and pepper.
Bake for 12-15 minutes, until the shrimp are cooked through and the stuffing is golden.
Serve with lemon wedges and garnish with fresh parsley.