I'd suggest trying to up the healthy fat content. Walnuts are good, maybe you could blend up some into a paste and put it on toast? Like walnut butter. Peanut butter on toast for a snack would be easy and good.
If your body isn't getting enough healthy fat, it won't feel satisfied. And whole grains help on that front too, compared to more refined ones. Whole wheat pasta meals with veggies? I need 1.5 cups of it to feel full. SAME EXACT MEAL with white pasta, I need 2c. So the heartier it is the less you need to feel full.
Peanut butter on whole wheat toast, you need 1 thick slice as opposed to 2+ of white or "wheat" that's all refined up (store brand wheat bread anywhere but whole foods, lol)
Make sense? So just because healthy fat and grain stuff goes up does not mean you'll need more in quantity.
I also went through a phase where I was STARVING all the time no matter how much I ate, and this is what helped me. Also, any cooking done, use olive oil for a while on the stove. There's something about it that seems to "stick" better than veg-soybean oils. These days, I use Canola, Olive, or Peanut based on what I'm making.
HTH! This will pass!