If I have a UK residence card, as it has almost no requirments for me to obtain, with my husband being Italian, can we move to Italy permanently?
If you move to Italy, you must apply for a residence permit based on Italian residence laws.
Your residence status in another European Union country is, in most cases, irrelevant.
As a Spouse of a EU-Citizen, most (but not all) EU Countrys, have special conditions for granting residence permits. Some EU countries implement extra national laws when the EU-Citizen is a citizen of their country. These laws can be more restrictive in nature.
As an Italian citizen, he is, no doubt, registered in the Italiani Residenti Estero (AIRE) system.
This would be the proper place to inform oneself properly about what must be done and possibly start any needed procedure.