Season the chicken breasts with salt and pepper.
Heat olive oil in a large skillet over medium-high heat. Add chicken and cook until golden and no longer pink in the center, about 5-7 minutes per side. Remove chicken and set aside.
In the same skillet, add minced garlic and sauté for 1 minute.
Pour in the heavy cream, chicken broth, and Italian seasoning. Bring to a boil and reduce heat to simmer.
Stir in the Parmesan cheese until melted and sauce is creamy.
Add the spinach and cook until wilted, about 2-3 minutes.
Return the chicken to the skillet and coat with the sauce. Simmer for an additional 3-4 minutes.
Serve the chicken hot, garnished with additional Parmesan cheese.