Pound chicken breasts (between 2 pieces of plastic) to 1/4 inch thick. Combine flour, salt and pepper, paprika. Coat breasts in flour and shake off excess.
Heat butter and olive oil in large skillet. Saute chicken breasts 2 minutes per side. Do not cook completely. Remove from pan and set aside.
Drain off all but 2 tablespoons of fat from skillet. Stir Madeira into drippings to deglaze the pan. Add chicken broth and lemon juice; heat briefly.
Return chicken to skillet; add lemon slices and capers. Simmer until sauce thickens slightly about 8 minutes. Sprinkle with minced parsley. Serves 6.