01 - Place each chicken breast between sheets of plastic wrap and pound to an even 1/2-inch thickness using a meat mallet. Season both sides generously with salt and black pepper.
02 - Arrange three shallow bowls in a row: fill the first with all-purpose flour, the second with beaten eggs, and the third with a mixture of breadcrumbs, grated Parmesan, garlic powder, and paprika.
03 - Dredge each seasoned chicken breast in flour, shaking off any excess. Dip into the beaten eggs, allowing the extra to drip off. Press firmly into the breadcrumb mixture, coating both sides evenly and thoroughly.
04 - Heat vegetable oil in a large skillet over medium-high heat until shimmering. Carefully add the breaded chicken breasts and cook for 4 to 5 minutes per side until deeply golden and the internal temperature reaches 165°F. Transfer to a paper towel-lined plate to drain.
05 - In a medium saucepan, melt butter over medium heat. Add minced garlic and sauté until fragrant, about 30 seconds. Pour in the heavy cream and chicken broth, bringing the mixture to a gentle simmer. Stir in the Parmesan cheese and Dijon mustard, then continue simmering for 2 to 3 minutes until the sauce thickens and coats the back of a spoon. Season with salt and pepper to taste.
06 - Arrange the crispy chicken on serving plates and spoon the warm creamy sauce generously over each piece. Garnish with chopped fresh parsley if desired, and serve immediately with your choice of sides.