01 - Preheat your oven to 390°F.
02 - Using a sharp knife, make deep cuts about ½ inch apart across each chicken breast, being careful not to cut all the way through to create the Hasselback effect.
03 - In a mixing bowl, combine the shredded mozzarella cheese, washed baby spinach, chopped sun-dried tomatoes, and minced garlic until well blended.
04 - Gently press the filling into each cut of the chicken breasts, ensuring even distribution throughout the slices.
05 - Place the stuffed breasts in a baking dish. Drizzle with olive oil and sprinkle evenly with Italian herbs, paprika, salt, and black pepper.
06 - Bake for 25-30 minutes until the chicken is cooked through (internal temperature reaches 165°F) and the filling is golden and bubbly.
07 - Let the chicken rest for 5 minutes before serving to allow juices to redistribute.