Season chicken breasts with garlic powder, Italian seasoning, salt, and pepper.
Add chicken to the skillet and cook until golden brown on both sides. Remove and set aside.
In the same skillet, pour in chicken broth, heavy cream, and Parmesan cheese. Stir well.
Add sun-dried tomatoes and spinach to the sauce, stirring until the spinach wilts.
Return chicken to the skillet, coating it with the creamy sauce.