Payout address format has changed?

When I run bitcoin-qt, it sets up a default wallet. When I ask it for the recipient address for this wallet, I was expecting something like 1FGasdfasdfasdf123asdfasdf. However what it actually provides is BC1QNZasdfasdfasdf… In fact there seems to be no way to induce bitcoin-qt to divulge an address in the form of 1FGasdfasdfasdf123asdf… Can someone clear up what the BC prefix is all about? I’m using the main Bitcoin blockchain (350 GB in size), not Bitcoin Cash..