Season both sides of the chicken breasts with salt, pepper, and Italian seasoning.
Heat the olive oil in a large skillet over medium heat. Add the chicken and cook for 6 to 7 minutes per side until golden and cooked through. Remove the chicken to a plate.
In the same skillet, add the minced garlic and cook for 1 minute until fragrant.
Pour in the heavy cream and chicken broth. Stir in the Parmesan cheese and let the sauce simmer for 2 to 3 minutes until it thickens slightly.
Add the fresh spinach and chopped sun-dried tomatoes. Stir until the spinach wilts, about 2 minutes.
Return the chicken to the skillet and spoon the sauce over the top. Let everything warm together for 1 minute before serving.