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

Place the salmon pieces onto the lined baking sheet, skin-side down.

Using a sharp knife, slice down the middle of each salmon piece, lengthwise—don’t cut all the way through.

Brush the salmon with 1 Tbsp of olive oil and sprinkle with salt and pepper. Set aside.

Heat the remaining 1 Tbsp of olive oil in a large pan over medium heat.

Add the spinach, Italian seasoning, paprika, cayenne, and a sprinkle of salt and pepper. Sauté until the spinach wilts, about 2 minutes.

Turn off the heat and mix in the chopped roasted red peppers, feta cheese, and parmesan. Stir it all together, mashing the feta a bit so everything sticks.

Spoon the spinach-feta mixture into the cut part of each salmon piece, filling them as much as you can.

Bake the salmon for 12-17 minutes, depending on thickness and how well done you like it. Remove from the oven and serve hot.