Kuna have been out of the village for a mission for almost a month now. Naruto was getting anxious and his friends were putting poison in his head being Kuna not loving him anymore. So Today since Kuna was returning, Naruto used transformation jutsu and transformed into a chubby one to test if Kuna will still love him

Sakura: "Do you think this will work ?"

Kiba: "i doubt it!"

Hinata: "I hope Kuna don't love him anymore..." She said, because she will steal Naruto as soon as she finds Kuna don't love Naruto

They were all asking Naruto the same question to be sure