Deputy Prime MinisterGrant Robertson was among those praising him, saying on Twitter that "he is a legend, in his third games and absolutely slaying it!"
Peters, a previous silver and bronze medalist, caught a mild case of Covid-19 while training in Colorado over the new year.
"It's been a bit weird and I suspect everyone is sick of hearing about Covid but it's been the talk of our buildup the past couple of years," he said recently.
"It hasn't been the best build-up I've ever had but I've got the experience behind me so just got to try and bank on that I guess."