When I went the other week, the queue for Fried/Just Chicken in X Sector was right around the back of the building almost curving round the other side of it. We saw the QR code for the order system and ordered on the website. Picked our collection time (earliest was 20 mins from point of ordering) then went and collected it from the entrance door where a member of staff let you in. It felt like Fast track for food! And the queue was not 20 mins long, easily 30 or 40.
My only gripe was it was a limited menu on the app - but that could've been the same ordering over the counter - and there was nowhere to apply MAP discount that I could see.
So if one good thing comes out of this pandemic, it's ordering on the app and collecting at your chosen time. Perfect if you're in the Smiler queue and you order your food for collection for when you get off it. Or indeed if you're in another area of the park and you order it to be ready when you arrive there.