My favourites for counter service meals in terms of value and food are (prices are apx):
Magic Kingdom:
Cosmic Ray's - 1/2 chicken & rib combo with sides (big enough to feed 2 ppl) $15
EPCOT:
Sunshine Season - Half chicken with sides $10, Ginger Beef $10
Tangierine Cafe (Morocco) - Shawarma Platters $15, Mediterranean Sliders $15
Hollywood Studios:
Fairfax Cafe - Chicken & spareribs with sides $15,
Animal Kingdom:
Flame Tree BBQ (my absolute favourite in the whole of WDW for counter service) - Ribs with sides $11
Yak & Yeti - Orange Beef $11
In my opinion, I would rather pay $10-$15 for something that will fill me up more, meaning the next time I eat would be hours later. Some of the bigger meals are even good enough to feed 2 people and a child. There are so many tasty selections to be found throughout the 4 parks, what I mentioned above are ones that we really enjoy!