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 •