Preheat the Oven:

Set your oven to 375°F (190°C).

Season the Chicken:

Place chicken breasts on a cutting board and drizzle with olive oil. In a small bowl, mix paprika, ½ teaspoon salt, garlic powder, and onion powder. Sprinkle the seasoning evenly on both sides of the chicken.

Prepare the Filling:

In a mixing bowl, combine softened cream cheese, Parmesan, mayonnaise, spinach, minced garlic, red pepper flakes, and the remaining ½ teaspoon of salt. Stir until creamy and well-mixed.

Stuff the Chicken:

Using a sharp knife, cut a pocket into the side of each chicken breast, being careful not to cut through completely. Spoon the spinach mixture into each pocket, distributing evenly.

Bake to Perfection:

Arrange the stuffed chicken breasts in a 9×13 baking dish. Bake, uncovered, for 25-30 minutes, or until the internal temperature of the chicken reaches 165°F (74°C).