Chicken is FAR cheaper than beef or pork.
Americans ate an estimated 28 Billion chicken wings in 2016, and that number has risen considerably since then.
At 4 four wing sections per bird that means that the poultry industry has to figure out what to do with the seven billion birds attached to those wings every year and KFC, Popeye's, Chick Fil A, and the other chicken chop houses can't use up that many birds so chicken is the low priced meat of the nation.
Disney is simply doing what they have been doing best lately.
Going cheap no matter what the customers want or like.