Panda Express does have sweet and sour chicken.
However the Sweet and Sour Chicken at Panda Express may not always be readily displayed on the steam table and sometimes is a made to order item depending on location and demand.
If you don't see the Sweet and Sour chicken at Panda Express you can ask for it and they likely will make it for you to order.
And depending on region if it's not very popular a certain Panda Express may not even have it although many of the Panda Express's do have the sweet and sour chicken.
If you're willing to wait 5 to 7 minutes (or 8 to 10 minutes when you're approaching closing time), the cooks at Panda Express can make the sweet and sour chicken just for you.
Sweet and Sour Chicken is a juicy chicken that is coated in a batter, deep-fried and tossed in sweet, tangy sauce with pineapple and bell peppers.
Sweet and sour chicken is a very popular Chinese food served at many Chinese restaurants or for takeout.