Preheat oven to 400°F and line a baking sheet with parchment paper.
Pat salmon fillets dry, drizzle with olive oil, then rub with Tuscan spice blend and sea salt.
Roast salmon on the top rack for 15–20 minutes until cooked through and flaky.
Heat olive oil or butter in a large skillet over medium-high heat; sauté minced garlic or shallot until fragrant (1–2 minutes).
Add Tuscan spice blend, a pinch of sea salt, tomato paste, and sun-dried tomatoes; cook for 1 minute.
Reduce heat to medium-low and slowly stir in heavy cream, stock, white wine, and lemon juice; let bubble gently for 1–2 minutes.
Whisk in parmesan cheese until melted and sauce thickens, about 2–3 minutes.
Add chopped kale and cook until softened.
Add roasted salmon fillets to the skillet and spoon sauce over them; simmer for 5–6 minutes.
Serve salmon with preferred sides such as gnocchi, rice, pasta, or roasted vegetables; garnish with extra parmesan.