Season salmon fillets with salt, pepper, and smoked paprika.
Heat olive oil in a large skillet over medium-high heat.
Place salmon skin-side up in the skillet and sear for 4-5 minutes per side until cooked through.
Remove salmon from the pan and set aside.
In the same skillet, sauté minced garlic for 1 minute until fragrant.
Whisk in the puréed roasted red peppers and heavy cream.
Bring to a gentle simmer and stir in the Parmesan cheese until melted and thickened.
Add the spinach to the sauce and stir until wilted.
Return the salmon to the skillet, spooning the sauce over the fillets.
Garnish with fresh herbs if desired and serve immediately.