01 - Preheat oven to 400°F (200°C). Position the rack in the center of the oven.
02 - Arrange three separate breading stations: a plate with all-purpose flour, a shallow bowl with beaten eggs, and a plate combining panko breadcrumbs, grated Parmesan, garlic powder, smoked paprika, salt, and black pepper. Mix the breadcrumb seasonings thoroughly.
03 - Pat the chicken breasts dry. Dredge each breast through the flour, shaking off excess. Dip into the beaten eggs, coating completely. Press firmly into the seasoned breadcrumb mixture, ensuring an even, adherent coating on all sides.
04 - Heat olive oil in a large ovenproof skillet over medium-high heat. Once the oil shimmers, carefully place the breaded chicken breasts in the pan. Sear for 2 to 3 minutes per side until a deep golden crust forms.
05 - Transfer the skillet directly into the preheated oven. Bake for 12 to 15 minutes until the internal temperature of the thickest breast registers 165°F (74°C). Remove from the oven and rest.
06 - While the chicken bakes, melt butter in a medium saucepan over medium heat. Add minced garlic and sauté until fragrant, approximately 1 minute. Pour in the heavy cream and chicken broth, stirring to combine. Add the Parmesan cheese and simmer gently, stirring continuously, until the sauce thickens and coats the back of a spoon, about 3 to 4 minutes. Stir in Dijon mustard and season with salt and pepper to taste.
07 - Spoon the creamy sauce generously over each rested chicken breast. Garnish with chopped fresh parsley if desired. Serve immediately with steamed vegetables, mashed potatoes, or pasta.