Earl of sandwich is out most favorite breakfast in downtown Disney. Tangaroa terrace at the DLH has breakfast. The loco moco and the Japanese pancakes look yummy! But they also have grab n go items. The coffee house at the DLH has pastries and grab n go items as well. Have a fun trip!
Edited to add, you can mobile order at the coffee house and tangaroa terrace. And for Earl, you can order online.