If you have 4 wheel drum brakes, I suspect they are out of adjustment, all 4 will need to be manually adjusted. Not sure on the jeep, but most vehicles have a knockout in the backing plate that you can insert a brake spoon in to manually set them. Basically, adjust, spin, adjust, spin,repeat until you have the same amount of drag on all the wheels, then hit the brakes a few times and recheck. when all are good, set the parking brake and recheck the rears, adjust as needed.
Contrary to popular belief, just yanking on the parking brake a few times will not set the shoes, and manual adjust has to be done first. After that the parking brake helps to keep it adjusted, the rears anyway.
Doing brakes is easy. Doing brakes right is a bit harder.