As a convert, I live with non-muslims parents (not ahlul kitab). I struggle a little bit with purity, especially when it comes to food. Can I eat with my parents out of taqqiyah (for the sake of unity, not fear) even though the food is najis (however it is halal meat)? My parents aren’t happy when I do not eat with them.

If your mother prepares the food without touching them with wet hands, you can eat. Otherwise unfortunately you cannot.