IMO this seems pretty perfect as a VS. multiplayer game, actually
While there is inherent randomness to whether the certain snacks you need show up, that's no different from getting the right gems/breakers in Puzzle Fighter. And that small degree of randomness is necessary for casual-competitive games like this. Smash Bros with your friends stops being fun when you beat them every time, and that's why it has items and stage hazards. You could even do the thing Puzzle Fighter/Twinkle Star Sprites/Tetris do and have both players share the snack order over the course of a round
You'd maybe need more content if you wanted to keep people playing for more than a few rounds though, something like items, wacky stages, unique characters, etc.