01 - Preheat oven to 400°F. Line a baking sheet with parchment paper.
02 - Pat chicken breasts dry and season both sides with salt and black pepper.
03 - Set up three shallow bowls: one with all-purpose flour, one with beaten eggs and milk, and one with panko breadcrumbs, pecorino, lemon zest, and parsley combined.
04 - Dredge each chicken breast in flour, shaking off excess, then dip in the egg mixture, and finally coat thoroughly in the pecorino-panko mixture.
05 - Transfer coated chicken breasts to the prepared baking sheet. Drizzle or spray lightly with olive oil. Bake for 20 to 25 minutes or until golden and cooked through; internal temperature should reach 165°F.
06 - While chicken bakes, melt butter in a saucepan over medium heat. Add minced garlic and sauté for 1 minute until fragrant.
07 - Add the heavy cream and chicken broth to the pan. Bring to a gentle simmer.
08 - Stir in lemon juice, salt, pepper, pecorino, and lemon zest. Cook 3 to 4 minutes, stirring frequently, until slightly thickened. Remove from heat and adjust seasoning as needed.
09 - Arrange crispy chicken breasts on serving plates, drizzle generously with lemon sauce, and garnish with chopped fresh parsley.