Start by patting the salmon dry and seasoning it lightly with salt. Heat olive oil in your skillet over medium-high heat, then place the salmon fillets flesh-side down (skin side up). Sear for about 4–5 minutes per side, until the fish flakes easily. Remove the salmon and set aside — later you’ll flake or chunk it to mix with the pasta.
In the same pan (no need to wash it), add the chopped sun-dried tomatoes and minced garlic. Stir for about a minute until fragrant. Then toss in the fresh spinach and cook just until it wilts — a couple of minutes is enough.
Pour in the heavy cream, then stir in paprika and red pepper flakes (if using). Let the sauce gently simmer for about a minute, stirring occasionally, until it thickens slightly and becomes creamy. Taste and season with salt if needed.
Meanwhile, cook the pasta in boiling salted water according to package instructions. Drain it, then add the pasta directly into the skillet with the cream sauce — toss to coat the noodles well. Flake the cooked salmon into large chunks and gently fold them into the saucy pasta so each bite gets tender salmon and creamy sauce. Warm through for another minute then remove from heat.