Preheat and Prepare: Start by preheating your oven to 350°F (175°C) and lining a baking sheet with parchment paper.
Season the Salmon: Drizzle oil over the salmon fillets, seasoning them with salt, pepper, smoked paprika, and Cajun seasoning. Carefully cut a deep slit in each fillet to create a pocket for the stuffing.
Mix the Stuffing: Combine thawed spinach, Boursin cheese, jalapeno, crab meat, Parmesan, and garlic in a bowl. Season with salt and pepper.
Prepare the Shrimp: Toss the shrimp with oil, Cajun seasoning, smoked paprika, salt, and pepper in a separate bowl.
Assemble: Fill the salmon pockets with the stuffing mixture, top with seasoned shrimp, and place on the prepared baking sheet.
Bake: Cook the salmon in the oven for 15-17 minutes or until it's thoroughly cooked and flakes easily.
Serve: Garnish with lemon wedges and enjoy the harmonious blend of flavors and textures.