Start by placing the chicken breasts between two sheets of plastic wrap. Use a meat mallet or rolling pin to gently pound them to an even thickness of about 1 inch.
In a shallow dish, combine the almond flour or all-purpose flour with 2 tablespoons of Parmesan cheese, salt, and pepper. Dredge each chicken breast in the mixture, ensuring they are well-coated.
In a large skillet, heat 1 tablespoon of olive oil and 1 tablespoon of butter over medium heat. Add the dredged chicken breasts and cook for about 5-7 minutes on each side until golden brown.
In the same skillet, add another tablespoon of butter and the minced garlic. Sauté for about 1 minute until fragrant, then add the chicken broth and stir in the Italian seasoning.
Lower the heat and pour in the heavy cream, stirring well. Let the sauce simmer for a few minutes until it thickens slightly, then stir in the additional 1/4 cup of Parmesan cheese.
Add the baby spinach to the skillet and stir until wilted, about 2-3 minutes. Return the chicken breasts to the skillet and spoon the sauce over them.
Plate the chicken, generously drizzling the creamy sauce over the top and serve with pasta or a fresh green salad.