Chigs is an alien species in
Space: Above and Beyond, so that might be the inspiration.
Rochica might be an invented name - searching for it only shows results of the contestant. Maybe it's inspired by Rocha?
Jairzeno might be inspired by Jairzinho, the alias of a famous Brazilian footballer.
Keep in mind that this is all speculation.
masculine list:
https://www.behindthename.com/pnl/191050/124079feminine list:
https://www.behindthename.com/pnl/191050/124080