There is no straight forward solution to this quest, as the judges you get are random. I do however have a few tips and pointers for you to get you on the right track.At the start of this quest you can head over to Pizza-Hack and grab a bite to eat. There's five pizza's on the menu, one from each race. Use your coupon and buy one of each, and it will tell you what the respective races like and dislike on their pizzas.
For your convinience, I've also written down the list here:
Likes: Meat, calories
Dislikes: Exotic, aesthetic
Likes: Seafood, vegeterian, exotic
Likes: Exotic, aesthetic, meat, fish, vegeterian
Dislikes: Uhm, nothing..?
Likes: Exotic, aesthetic
This is what I could figure from the text, so it may or may not be 100% accurate. It was translated from russian and it's a bit dodgy at times.
Anyway, the trick here is to make pizza's based on what kind of judge panel you have. It's random from time to time what races you get in the panels, so there's no works-every-time solution here. Sometimes you might even get stuck with the most incompatible judges and no matter how hard you try to please them all, you still won't win (even if you bribe one of them). Just keep trying. If you're really lucky, you'll get three judges from the same race.
What's a good amount of stuff to add to your pizza? I tried to get around 10 of what they likes, and as little as possible of the stuff they don't like. Make sure you don't make your pizza taller than 20 units though, or you will fail the mission.Help with the Pizza competition quest,