I think I most likely had some leptin issues, but didn't really do anything SPECIFICALLY to fix them. I will tell you what I've been doing and I've seen over time a big change.
I did eat three meals for a while, but eventually it's moved to be two meals a day, usually one between 9-11 (depending on when I'm hungry, LOL), and the other somewhere around 4-6. I don't get hungry after dinner, I am not hungry when I wake up and I never get those low-blood sugar crash type hungers. This has developed naturally over time, I'd just eat later, when I felt like it. I also noticed the meal size has gone down a bit, but that depends too on what I'm doing workout wise. So technically I guess I mostly have an "eating window" most days. But I truly play it by ear each day.
My diet has changed to be a lot more protein and some veggies and starchy carbs (sweet potatos). It's much easier to eat a lot of protein and feel satiated and not stuffed, but if memory serves this took some time? I believe it felt like SOOOOO much food at first. Now it doesn't (and isn't portionwise that much either).
Sweet potatoes ROCK. For me (I have thyroid issues), going low on carbs is not productive. I stall out. I tend to go between 50g-100g on a regular basis and that's working for me re: fat loss.
I do tend to eat the same foods regularly, so that's funny after reading the previous posts! I like what I like and it's mostly just me to cook for right now, so it's easier to just buy simple stuff. I eat eggs/steak/sweet potatoes/salad/chicken/avocado/coconut oil. That pretty much sums up 85% of my food choices, in one variation or another.
And lastly, lately I've ditched the alcohol (for the most part). That REALLY saw a huge difference in both my fat loss AND any hunger/craving stuff. Even after only 1-2 glasses of wine, I am more hungry the next day. I know the sugar plays a huge role, and alcohol in general, but I also do think it affects that leptin/grehlin thing as well.
So while I haven't actively been trying to get my leptin receptors working better, I have noticed differences in my hunger/eating signals. I am better at listening to them, and I don't have the crazy "cravings" all of the time overruling it.