I get gas and something akin to acid reflux if I don't get enough for breakfast, which is why I try to at least get one slice of protein bread (toasted) into me if I'm drinking just a smoothie.
Lunch is the better meal for me to skip, especially if I've had bacon and eggs for breakfast. That'll hold me.
I have experimented with two meals a day, but it's a non-starter when I'm working two jobs: I need more sustainable energy so I don't crash about 4 pm and never recover. I have given up pop and energy drinks, which cause additional problems.
My hope is to get back to one decent-paying job, but I'm not holding my breath.
In the meantime, it's "salad time," and I eat a lot more salad-type dishes with pork, chicken, or beef strips on the top. It's budget and weight-friendly and filling if I add some navy or garbanzo beans to it.