Very good for your first jam! I think it just needs checkpoints after every level change and a removal of the stretches where there aren't any obstacles. Maybe the first food clump could be closer to the start, then get steadily further away, then there would be less space to have to continually redesign each time and would make each level more and more daunting as the challenge increased. That, or just creating entirely new levels each time so the terrain could also be different, but I do like the idea you had of remixing the same level over and over, so you be the judge.