Yeah weed makes you feel ok with eating anything and everything because it tells your brain you're starving and it enhances the taste, smell, and pleasure from food.
You'll probably gain a shit load of weight way more than you expect like 10-12 pounds or some shit but it's not all actual fat it's mostly water; it's probably more like 2-3 pounds. Don't get discouraged or give up you could easily be back to where you were in a week or less, it's not a big deal unless you give up and keep doing it