I got this info from 2:38 of this video https://youtu.be/6AherBiu43I?t=158
What happened essentially was after an update that messed with some people's save files, as an apology patch the dev added a roobit snack minigame, involving a feature where a notification will pop up accompanied by a sound, saying "you found a roobit snack" any time while playing the game, even while paused. The dev later made a patch to let people remove this feature, however it's only on the itch version because the dev was lazy.

While that's ironically fitting for this game's humour, that's problematic because most steam users won't know of this patch, and apparently this game becomes straight up unplayable for people with sound based sensory issues (or also for anyone in general that finds this mildly annoying too). So seeing that years after release there's no guide for this, I'm finally making one for the few who are playing in the current year.

Since the patch to remove this isn't on steam and you have to download it elsewhere, you'll need to go to the Pizza Game itch.io page or click this link https://plasterbrain.itch.io/pizzagame and scroll to the bottom where you will find the download for this patch in the Download Demo section (why? idk).
The file is named die_roobit_snacks.rpy when you download it. You'll need to place it in the game files. If you don't know how to do that you have two options.

1. Find the game in your steam library and right click it, press properties, installed files, browse, then finally now that your in the pizza game files press 'game' and then move the die roobit file inside there.
2. You can go there yourself by following this pathway in your files: Windows (C:) > Program Files (x86) > Steam > steamapps > common > PizzA Gameg > game, then move the die roobit file inside. The first folder will be named differently for some people but its the drive with "(C:)" in its name AKA the C drive.

Now you should be free of the roobit snack pop ups. Hope this helps.