01 - Preheat your oven to 400°F (200°C). Position the rack in the center.
02 - Arrange three separate breading stations: a plate with the all-purpose flour, a shallow bowl with the beaten eggs, and a second plate combining the panko breadcrumbs, 1/2 cup grated Parmesan, garlic powder, smoked paprika, salt, and black pepper.
03 - Pat each chicken breast dry. Dredge through the flour, shaking off excess. Dip into the beaten eggs, coating completely. Press firmly into the seasoned breadcrumb mixture, ensuring an even, thorough coating on all sides.
04 - Heat the 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, or until the internal temperature of the thickest part of each breast reaches 165°F (74°C).
06 - While the chicken bakes, melt the butter in a medium saucepan over medium heat. Add the minced garlic and cook until fragrant, about 1 minute, stirring frequently to prevent browning.
07 - Pour in the heavy cream and chicken broth. Stir in the remaining 1/2 cup of Parmesan cheese and the Dijon mustard. Simmer gently, stirring continuously, for 3 to 4 minutes until the sauce coats the back of a spoon. Season with salt and pepper to taste.
08 - Remove the chicken from the oven. Spoon the creamy sauce generously over each breast. Garnish with chopped fresh parsley if desired and serve immediately with steamed vegetables, mashed potatoes, or pasta.