That would be similar to John Byrne did in the miniseries of the same name. He first used his powers publicly in street clothes without glasses. Lois named him Superman in the Daily Planet. Clark and his parents create the costume and glasses disguise. He appeared in a costume a number of times. Than finally Clark Kent in glasses shows up at the Daily Planet with an interview with Superman. Thats how he was hired.
The movie seems to be using a lot of that as inspiration. Main difference is the suit being Kryptonian. In this films had been following reports of a mysterious "Guardian Angel" for years. That Clark was traveling the world and secretly helping people, before in costume, is right from John Byrne. There was references to this in the L&C Pilot too.