Disney says
Golden Baked Chicken Legs served with Mashed Potatoes or Rice, Seasonal Vegetables and a Buttermilk Biscuit or Allergy-Friendly Roll.
Friendliest.app says
The allergy-friendly chicken meal comes with four baked chicken legs. It is free of all the top 8 allergens (gluten/wheat, milk, fish, shellfish, peanuts, tree nuts, eggs and soy) when ordered with rice and omitting the buttermilk biscuit or allergy-friendly roll.

This meal contains eggs if ordered with the allergy-friendly roll or gluten/wheat and milk if ordered with the buttermilk biscuit.

If ordered with gravy, this meal also contains gluten/wheat, milk and soy.