Energy is not an issue at all. The species would have not survived if prehistoric hunters would have lost their energy the first day they didn’t get food. As a matter of fact by the 4th day your resting metabolic rate actually goes up.
Now we are told that we should eat throughout the entire day and in-between wonder why society started to get fat ever since people started doing that.
I’m an ironworker, very physical job, climbing, busting my ass all day, I pretty much do OMAD everyday, because I don’t care to waste time making breakfasts and lunches. It’s honestly not that hard, and if it feels hard the only way to get over that is to just do it anyways, people at work call me crazy for not eating lunch, but I just tell them they are weak.
I’d say just go for it. All you have to lose is a little hunger suffering, and honestly we live in a world where people are wayyyy to accustomed to feeling full all the time. So I say give it a try, and try your best to make it work