Actually, this may be genevas da’as. The mechaber paskens that a person cannot open a bottle of wine in front of a guest if he was originally going to open it anyway, without telling the guest ‘I was opening this anyway, I’m not only doing it for you’. Event though the issue is all in the guest’s mind, and the owner said nothing specifically.
I see this chickpea pasta case as even worse, since it appears to be something it is not. Let’s not forget that there may be other allergy/digestion issues that the guest may want to be aware of before consuming something they aren’t used to.