Prepare the Chicken:
In a shallow dish, whisk together 2 tablespoons flour, 2 teaspoons Italian seasoning, garlic powder, salt, and pepper.
Slice each chicken breast in half horizontally to create thinner cutlets (4 cutlets total).
Press each cutlet into the flour mixture, coating both sides. Shake off excess flour.
Cook the Chicken:
Heat olive oil in a large sauté pan over medium heat until shimmering (about 1 minute).
Add the coated chicken cutlets to the hot pan. Cook for 4-6 minutes without moving them until golden brown.
Flip the chicken and cook for another 4-6 minutes until the internal temperature reaches 165°F.
Transfer the cooked chicken to a clean plate and tent loosely with foil to keep warm.
Make the Sauce:
Reduce heat to medium-low. Add butter to the same pan (don't wipe it out).
Once butter melts, add minced garlic, 2 teaspoons Italian seasoning, salt, and pepper. Stir constantly for 1 minute until fragrant. Watch carefully to prevent burning.
Sprinkle 2 tablespoons flour over the garlic butter. Stir constantly for 1 minute to cook out the raw flour taste.
Pour in chicken broth while whisking vigorously. Scrape up all the browned bits from the bottom of the pan.
Add heavy cream while stirring. Bring to a gentle simmer.
Add Parmesan cheese gradually in handfuls, stirring after each addition until melted and smooth.
Let the sauce simmer for 2-3 minutes until thickened to desired consistency. Add a splash of broth if too thick; simmer longer if too thin.
Finish the Dish:
Return the cooked chicken to the pan, nestling it into the sauce. Spoon sauce over each piece.
Let everything simmer together for 1-2 minutes to meld the flavors.
Taste and adjust salt and pepper as needed. Garnish with fresh chopped parsley.
Serve immediately while hot with your choice of pasta, rice, or roasted vegetables.