I need to know your food preferences to recommend something to you. However, I will give you my favorites.
Magic Kingdom: in all honesty, I would go to the quick service restaurants such as Pecos Bill. Cinderella's or Be Our Guest have nice ambiance, but I don't feel that the food is special. The food is good, just not special.
Epcot: Biergarten is my favorite. The food is good, the atmosphere is pleasant, the entertainment is fun, and the Lager is excellent. Akershus and Morocco are good for adventurous tastes.
Hollywood: Brown Derby is excellent. I also enjoy Sci-fi Dine-in theater. It's just fun.
Animal Kingdom: I love the food at Tusker House, although I could do without the character interaction. I also love Tamu Tamu Refreshments. The dark or coconut rum dole whips are a great way to cool down in the hot afternoon.