Prepare the Chicken Slice the chicken into cutlets and pound to ½-inch thickness. Season with salt, pepper, and Italian seasoning. Dredge in flour and Parmesan mixture.
Sear the Chicken Heat olive oil in a large skillet over medium-high. Sear chicken for 4–5 minutes per side until golden brown. Set aside.
Caramelize Garlic Lower heat to medium. Melt butter and add garlic cloves. Cook for 6–8 minutes until golden and softened.
Build the Sauce Stir in 1 tablespoon flour and cook for 1 minute. Gradually whisk in chicken broth. Add Dijon mustard, onion powder, thyme, and bouillon. Let simmer for 3–4 minutes.
Add Cream and Cheese Stir in heavy cream and bring to a low simmer. Add shredded Parmesan if using.
Finish the Dish Return chicken to the skillet and spoon sauce over the top. Simmer covered for 5–6 minutes. Serve hot with your favorite side.