Make the stuffing: Mix crab, shrimp, cream cheese, mayo, lemon juice, Dijon, garlic, herbs, paprika, salt, and pepper. Stir just until combined.
Cut the pockets: Pat salmon dry. Slice a deep pocket into the side of each fillet (do not cut through). Spoon in the stuffing and gently press closed.
Season: Brush tops with olive oil or melted butter. Sprinkle with paprika, salt, and pepper.
Bake: Bake at 400°F (200°C) for 14 to 18 minutes, until the salmon flakes easily and the filling is hot.
Serve: Add lemon wedges and a little fresh herb on top. Spoon any pan juices over the fish.
