Known for his singing talent, Campana, has been performing in fluent Spanish for quite a while (via Distractify). Drake himself implies that this pivot is due to his strong Latin American fan base, and the fact that American celebrities often ignore this audience. These may very well be contributing reasons, but U.S. fans seem to find this explanation suspect, noting his lack of recent success with English-speaking audiences and recent scandals with an ex-friend (via Just Jared). The real reason for change could be all of these factors, some, or none, but we have to admit it feels a little strange for a kid from California that we watched grow up speaking English.

As for Campana's changed looks since his Nickelodeon days, however, we can assure you that it's no publicity stunt. First of all, people grow up, and teenagers will always look different from their adult selves. A nineteen-year-old Drake Bell, however, had a bigger change than most as he recovered from a terrible car accident when a driver crossed the yellow line and hit a car driven by his friend head-on (via People). Sharing in 2006 the actor thought at the time, "My career's over. I don't know how I'm going to look after this." He recovered from multiple lost teeth, stitches, a jaw wired shut, neck and jaw surgery, and more. 

Campana has reinvented himself successfully before, so perhaps he's doing it again.