There is also a bakery in MGM on the corner of Sunset Blcd? (Right near the Brown Derby.
Epcot has a bakery type place that is open for breakfast I think it is called Fountainview.
There is no place in the parks, other than sit down meals to get things other than pastries and coffee and such. Eggs, bacon, ect are only served at the resorts or in sit down places.
The fruit stands (there is one at each park) are open at breakfast time.