2 tablespoons olive oil, divided |
4 (6 ounce) boneless skinless chicken breast halves |
3/8 teaspoon salt, divided |
1/4 teaspoon fresh ground black pepper |
3/4 cup chicken broth, divided |
1/4 cup unfiltered apple cider |
2 tablespoons whole-grain dijon mustard |
2 tablespoons butter, divided |
1 tablespoon chopped fresh flat-leaf parsley |
12 ounces brussels sprouts, trimmed and halved |