Pat chicken breasts dry, season with salt and pepper, and cook in olive oil over medium-high heat for 6-7 minutes on each side until golden brown.
Sauté minced garlic in the same skillet for 30 seconds until fragrant.
Pour in heavy cream and chicken broth, stir, and bring to a gentle simmer until sauce thickens.
Add sun-dried tomatoes, spinach, Italian seasoning, and Parmesan cheese, stirring until spinach wilts and cheese melts.
Return cooked chicken to skillet, spoon sauce over, and let simmer for an additional 3-5 minutes.