01 - Season scallops generously with kosher salt and freshly ground black pepper on both sides, ensuring even coverage for maximum flavor penetration.
02 - Heat olive oil and 1 tablespoon butter in a large skillet over medium-high heat until shimmering. Add scallops in a single layer without crowding. Sear for 2–3 minutes per side until golden brown crust forms and centers are just opaque. Transfer to a plate and tent loosely with foil.
03 - Reduce heat to medium. Add remaining 1 tablespoon butter to the skillet, then add minced garlic and diced shallot. Sauté for 1–2 minutes, stirring constantly until fragrant and translucent, being careful not to brown the garlic.
04 - Stir in Cajun seasoning, smoked paprika, and cayenne pepper. Cook for 30 seconds, constantly stirring to bloom the spices and release their essential oils without burning.
05 - Pour in heavy cream and stock, using a wooden spoon to scrape up any browned bits from the bottom of the pan. Simmer for 2–3 minutes until sauce slightly thickens and coats the back of a spoon.
06 - Add Parmesan cheese and lemon juice, stirring continuously until cheese is completely melted and sauce is smooth and velvety. Season with additional salt and pepper to taste.
07 - Return seared scallops to the pan, turning once to coat in sauce. Warm through for 1 minute. Remove from heat, sprinkle with fresh parsley, and serve immediately with sauce spooned over the scallops.