Preheat your oven to 375°F (190°C).
Prepare the stuffing by combining cream cheese, Parmesan, spinach, sundried tomatoes, garlic powder, Italian seasoning, salt, and pepper in a bowl.
Slice a pocket into each chicken breast, being careful not to cut all the way through.
Stuff each chicken breast with the filling, pressing gently to ensure they are packed but not overly tight.
Heat olive oil in an oven-safe skillet over medium-high heat. Sear the stuffed chicken breasts for 3-4 minutes on each side until browned.
Pour in chicken broth, then transfer the skillet to the preheated oven.
Bake for 25-30 minutes or until the internal temperature reaches 165°F (74°C).
Let the chicken rest for 5 minutes before serving.