OP on day 4 of a CAT 1 run right now. I also eat between 6pm-10pm each day so I'm technically doing a RFL Intermittent fast. I don't know about zero hunger; I'm feeling kinda crappy right now but it is convenient to wake up, have a 0 calorie energy drink and than just head out to work without having to worry about eating breakfast or packing lunch.
Also, can you explain your protein pancake a bit more?
Are you saying you just mixed whey protein+ 1 egg+ egg whites in a bowl, mixed it up, and microwaved it and that is it? No other prep or cooking involved?