Perhaps pellet seasoning should be capped? It's fairly straightforward to reach a point where ghosts stay blue almost indefinitely, so as long as you never eat a ghost, you can just clear level after level with virtually no risk, racking up infinitely high scores.
Or you (the developer) might consider that a feature instead of a bug, which is fine by me. Not a complaint! I just feel like I "beat" the game and it's only been out a few days, which makes me sad.
I hit about 1.1 million in my last game before I quit, with dozens of lives stockpiled.