Chicken Piccata

INGREDIENTS

• 1/3 cup freshly squeezed lemon juice (2 lemons), lemon halves reserved
• Sliced lemon, for serving
• 2 split (1 whole) boneless, skinless chicken breasts
• Good olive oil
• Kosher salt and freshly ground black pepper
• 1/2 cup dry white wine
• 3 tablespoons unsalted butter, room temperature, divided
• 1/2 cup all-purpose flour
• Chopped fresh parsley leaves, for serving
• 1 extra-large egg
• 1/2 tablespoon water
• 3/4 cup seasoned dry bread crumbs