Method:
Place chicken cutlets between 2 sheets of parchment, waxed paper or plastic wrap. With a mallet or rolling pin, gently pound cutlets to an even 1/4-inch thickness. Zest and juice the lemon.
In a shallow bowl or pie plate, combine flour, lemon zest, salt and pepper. Dip chicken in flour, coat all sides and shake off excess. Preheat a large sauté pan over medium high heat. Add olive oil and tilt pan until a thin layer covers the bottom. Place chicken in hot oil and cook 3 minutes per side, until browned and cooked through. Remove pan from heat. Transfer chicken to a clean plate and cover to keep warm.
Return pan to medium high heat, add capers and cook for 1 minute until brown on edges and slightly plumped. Add wine and chicken broth and bring to a brisk simmer, stirring with a wooden spoon to scrape up browned bits from the bottom of the pan. Cook until volume is reduced by half, 3 to 4 minutes. Remove from heat, stir in parsley and 2 tablespoons of the lemon juice. Taste and adjust seasoning with salt, pepper and lemon juice. Divide chicken among plates. Top with capers and drizzle with sauce.