Is there a spell trigger (in this case passive spells) for when a player/entity eats?

• in my case, I'm trying to make a specific passive spell not allow the player to eat normally (it would give hunger upon casting).

There is not, but I could add one. You won't be able to cancel the eating, but yeah you could give hunger. I'll call it consume.

good to hear! btw while I'm thinking of it is there a possibility to blacklist what items count? specifically, if I wanted potions to still be usable?

Hm- yes I think the trigger will fire before the item is consumed, so you could use the CheckInventory action with slot: mainhand .. though i guess if you drink from offhand it might get a little complicated, but I think maybe doable for the most part.

Unfortunately triggers can't really accept parameters so I can't tell you specifically what item was consumed.