Preheat the oven to 375˚F.
Mix the cream of chicken soup, lemon juice, capers, 1/2 cup parmesan cheese, garlic, salt and pepper together in a bowl.
Lay the chicken breasts flat on the bottom of a large casserole dish. Pour the cream of chicken soup mixture over the top and spread it evenly. Top with the remaining 1/4 cup parmesan cheese and top with two lemon slices on each chicken breast.
Bake for 35 to 45 minutes or until the chicken is cooked through (160˚F internal temp) and the sides are bubbly.
Add freshly chopped parsley over top and serve. Remove lemon slices before eating. Enjoy!