4 (6-ounce) skinless, boneless chicken breast halves |
1/2 teaspoon salt, divided |
1/2 teaspoon freshly ground black pepper |
6 1/2 teaspoons chilled butter, divided |
2 teaspoons olive oil |
3 cups (3/4-inch-thick) slices zucchini (about 2 medium) |
1/2 cup fat-free, lower-sodium chicken broth |
1/2 teaspoon dried chervil |
1 teaspoon fresh lemon juice |
1 tablespoon chopped fresh parsley |