Season chicken with salt and pepper on both sides generously.
Heat olive oil in a skillet over medium heat and sear chicken 5-7 minutes per side until golden brown. Set aside.
Add minced garlic to the skillet and cook for 1 minute until fragrant.
Pour in cream and stir in Italian seasoning and parmesan. Cook 2-3 minutes to thicken.
Add spinach if using, and sauté just until wilted (about 2 minutes).
Return chicken to skillet and spoon sauce over. Let simmer 3-5 minutes to combine flavors.
Serve hot with more sauce over the top for extra flavor.
Notes
You can easily double the recipe—just adjust the cooking time to allow extra pressure build-up. Great for meal prep and leftovers hold flavor well up to 4 days refrigerated.