Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.

Carefully slice each piece of salmon lengthwise to create pockets for the filling.

Drizzle 1 tablespoon of olive oil over the salmon fillets and season with salt and pepper.

In a medium skillet, heat the remaining tablespoon of olive oil and add the spinach, Italian seasoning, paprika, cayenne, salt, and pepper. Sauté for about 2 minutes.

In a mixing bowl, combine the sautéed spinach with roasted red peppers, crumbled feta, and parmesan.

Fill each salmon pocket with the spinach-feta mixture.

Bake the salmon in the preheated oven for 12 to 17 minutes.

Let the salmon rest for a few minutes before serving.