skinless, boneless chicken breast halves, pounded 1/2 inch thick and cut into thirds, Kosher salt and freshly ground black pepper to taste, olive oil, unsalted butter, white wine, can chicken broth, garlic, chopped, drained capers, lemon, juice (about 1/4 cup) and 1 lemon, sliced, can artichoke hearts, drained and chopped, liquid reserved, diced tomatoes, chopped fresh flat-leaf parsley