My DH isn't the greatest at managing the day-to-day but he's great in a crisis. Rises to the occasion, becomes selfless and wonderful, etc etc. I just went through something similar and it's almost funny how competent he suddenly becomes. Don't get me wrong, it's a great quality, but if your DH is good at the day-to-day but lousy in a crisis, maybe that's OK. If he's lousy at the day-to-day AND in a crisis, not okay.
Also, take into account that he may have been channelling his anxiety. After one of my recent procedures my DH felt compelled to reorganize our bookshelves. We are academics so there are a LOT Of books. I thought it was weird at first but then I realized he just needed some way to keep busy for a while.
Also OP, you didn't *have* to get up and heat up leftovers, right? You or your DH could have just ordered pizza or DoorDash, right?