Preheat Oven
Preheat your oven to 375°F (190°C).
Prepare the Chicken
Place chicken breasts on a cutting board. Using a sharp knife, cut a deep pocket lengthwise into each breast, being careful not to slice all the way through.
Season the Chicken
Mix garlic powder, paprika, salt, and pepper. Rub the spice mixture all over the outside and inside of the chicken breasts.
Stuff the Chicken
Place 3 asparagus spears and a generous pinch of shredded mozzarella and Parmesan into each pocket. Secure with toothpicks or tie with kitchen twine if needed.
Sear the Chicken
Heat olive oil in an oven-safe skillet over medium-high heat. Add stuffed chicken and sear 3–4 minutes per side, until golden brown.
Bake the Chicken
Transfer the skillet to the preheated oven. Bake for 15–18 minutes, or until chicken is cooked through (internal temperature of 165°F).
Serve
Let the chicken rest 5 minutes before removing toothpicks. Serve with your favorite side like garlic mashed potatoes or a fresh green salad.