I have not eaten breakfast at citywalk but have heard pastamore has a reasonable price breakfast items and there is a cinabons that have good cinnamon buns
There's a little place just inside the Universal gates, the Beverly Hills Boulangerie, that we like. There's also a character breakfast at Confisco Grille or at least there used to be. I personally drag myself over to Starbucks when I need something before going into the parks.
I imagine that the family restaurant in each hotel serves breakfast too.
Pastamore's breakfast pizza is pretty good but they have a standard breakfast menu as well (bacon, eggs, potatoes, toast, etc.). I usually grab something there if I'm working an early morning event at CityWalk.