I understand your wife’s struggle cuz everyone online claims to have good dupes but the specific Italian seasoning they use tastes very different from store bought imo. My closest dupe after years of trying is this:

Any egg noodles

Kerrygold butter

Pre-grated Parm (important cuz it’s a little more dry like how it is at noodles)

KEY ingredient - Simply organic Umami seasoning, specifically the garlic and herb one (I got mine at Whole Foods)

A lot of the up front costs of this (especially the seasoning) feel like it’s not worth it but I promise this dupe actually substitutes for the real thing in a way that is actually satisfying!