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 dishes: fill the first with flour, the second with beaten eggs, and combine breadcrumbs, grated Parmesan, garlic powder, and paprika in the third. Mix the breadcrumb seasoning blend thoroughly.
03 - Dredge each seasoned chicken breast in flour, shaking off any excess. Dip into the beaten eggs, allowing surplus to drip off, then press firmly into the breadcrumb mixture, coating both sides evenly.
04 - Heat vegetable oil in a large skillet over medium-high heat until shimmering. Carefully place breaded chicken breasts in the pan and cook for 4 to 5 minutes per side until the crust is deep golden brown 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 for 30 seconds until fragrant. Pour in heavy cream and chicken broth, bringing the mixture to a gentle simmer. Stir in 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 alongside mashed potatoes, steamed vegetables, or pasta.