Preheat the oven to 400°F.

Pat the chicken dry with a paper towel. Make a horizontal slit in the thickest part of the chicken breast to create a pocket, making sure not to cut all the way through.

In a small bowl, combine the paprika, oregano, garlic powder, onion powder, salt and pepper. Season the chicken breast with the seasoning and use your hands to rub the seasoning on both sides of the chicken.

In a small bowl, combine the spinach, feta cheese, ricotta cheese, scallions, garlic and dill. Stuff the mixture evenly inside the chicken breast, then use a couple toothpicks to close each pocket.

Heat a large oven-safe skillet or cast iron skillet over medium-high heat. Add the olive oil, then add the stuffed chicken and sear until lightly golden brown, about 3-4 minutes per side.

Transfer the skillet to the oven uncovered and bake until cooked through, about 15-18 minutes. Broil for an additional 1-2 minutes if needed to brown the skin.