If I could make a little suggestion here that has worked for me when I know I won't get to eat lunch for a longer time than usual?
I usually have cereal for breakfast. If I'm going to have to wait for lunch and I know it ahead, I eat a one ounce pkg of peanuts with my breakfast. And take an alli pill. I don't usually take one in the morning because with my cereal and fat free milk I don't get hardly any fat...
Another suggestion is to make a smoothie for your breakfast and put some tofu, yogurt, fruit and 1 ounce of almonds in it. I have a magic bullet blender that pulverizes the almonds. You still get a little "chew" in the smoothie. That will last more that 6 hours, believe me.

Cookies are behind me!
Yes, I know that my picture is hilarious. I looked really surprised that my pic was being taken... but it was all an act.. this is my "surprised" face...