01 - Preheat the oven to 400°F (200°C) and line a baking sheet with parchment paper.
02 - Pat the chicken breasts dry and season both sides generously with salt and freshly ground black pepper.
03 - Arrange three shallow bowls: one with all-purpose flour, one with eggs beaten together with milk, and one with a mixture of panko breadcrumbs, grated Pecorino Romano, lemon zest, and parsley.
04 - Dredge each chicken breast in the flour, shaking off excess. Dip into the egg mixture, then coat evenly with the pecorino-panko mixture.
05 - Place the coated chicken breasts on the prepared baking sheet. Lightly drizzle or spray with olive oil.
06 - Bake for 20 to 25 minutes until the crust is golden and crisp, and the internal temperature of the chicken reaches 165°F (74°C).
07 - While the chicken bakes, melt unsalted butter in a saucepan over medium heat. Add minced garlic and sauté for 1 minute until aromatic.
08 - Pour in heavy cream and chicken broth, stirring to combine. Bring to a gentle simmer.
09 - Stir in lemon juice, salt, pepper, grated Pecorino Romano, and lemon zest. Simmer for 3 to 4 minutes, stirring, until just thickened.
10 - Taste and adjust seasoning if necessary. Remove sauce from heat. Plate the golden chicken breasts, drizzle with creamy lemon sauce, and garnish with chopped parsley.