01 - Preheat oven to 400°F (200°C).
02 - Arrange three 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.
03 - Dredge each chicken breast through the flour, shaking off excess. Dip into the beaten eggs, then press firmly into the seasoned breadcrumb mixture, ensuring an even, thorough coating on all sides.
04 - Heat olive oil in a large ovenproof skillet over medium-high heat. Sear the breaded chicken breasts for 2 to 3 minutes per side until the exterior is golden brown and crisp.
05 - Transfer the skillet directly into the preheated oven. Bake for 12 to 15 minutes until the chicken reaches an internal temperature of 165°F (74°C) and is cooked through.
06 - While the chicken bakes, melt butter in a saucepan over medium heat. Add minced garlic and sauté until fragrant, approximately 1 minute. Pour in heavy cream and chicken broth, then stir in grated Parmesan. Simmer gently for 3 to 4 minutes, stirring continuously, until the sauce thickens. Season with Dijon mustard, salt, and pepper to taste.
07 - Remove the chicken from the oven. Spoon the creamy sauce generously over each breast. Garnish with chopped fresh parsley if desired and serve immediately.