MK: Pecos Bill (I can make "Figaro fries" just asking for a side of fries and adding stuff from the fixin's bar!)
EPCOT: Sunshine Seasons has a lot of varieties.. Japan also is awesome for healthy options
Studios: Toy Story Pizza Planet (there's not a lot of choice at this park, IMO)
DAK: Tusker House (when it was a CS restaurant, anyway..)
Resort: Pepper Market (Coronado Springs).. I must admit I haven't been everywhere but there is sooo much here for everyone, I never worry!
DTD: Earl of Sandwich (this is my MUST GO TO each and every time.. the Earl Grey Lemonade is THE BEST!!!)