Disney says
BBQ Chicken, Tomatoes, Bacon, Green Onion, Red Cabbage, and BBQ Vinaigrette.
Friendliest.app says
The BBQ Chicken Salad is free of the top 8 allergen - gluten/wheat, milk, fish, shellfish, peanuts, tree nuts, eggs and soy when ordered without the optional cheese.

When ordered with the optional cheese this meal contains milk.