| 3 tbsp. | Balsamic vinegar |
| 1 tbsp. | Pure maple syrup |
| 1 tsp. | Dijon mustard |
|   | Kosher salt |
| 1/2 cup | Extra-virgin olive oil |
| 2 | Boneless, skinless chicken breasts (about 1 lb. total) |
| 3/4 tsp. | Italian seasoning |
|   | Freshly ground black pepper |
| 2 heads | Romaine lettuce, thinly sliced (about 8 c.) |
| 2 small or 1 large | Avocado, halved, thinly sliced |
| 1 (12-oz.) container | Mini mozzarella balls, drained, halved or quartered if large |
| 1 cup | Cherry or grape tomatoes, halved |
| 1/2 cup packed | Fresh basil leaves, thinly sliced |