Step 1: Prepare the Chicken

Using a sharp knife, slice each chicken breast horizontally to create a pocket, making sure not to cut all the way through. Season the inside and outside with salt, pepper, paprika, and garlic powder.

Step 2: Make the Filling

In a mixing bowl, combine mozzarella, cream cheese, Parmesan, chopped spinach, minced garlic, and onion powder. Mix until well combined. This creamy filling will ensure every bite is bursting with flavor.

Step 3: Stuff the Chicken

Carefully spoon the cheese and spinach filling into each chicken breast pocket. Use toothpicks to secure the edges if needed, ensuring the filling stays inside during cooking.

Step 4: Sear the Chicken

Heat olive oil in a skillet over medium-high heat. Sear the stuffed chicken breasts on both sides until golden brown (about 3-4 minutes per side). This step locks in flavor and gives a nice crust.

Step 5: Bake to Perfection

Transfer the seared chicken to a baking dish or oven-safe skillet. Bake at 375°F (190°C) for 20–25 minutes, or until internal temperature reaches 165°F (74°C). Let it rest for 5 minutes before slicing and serving.