Iruka - sensei would be very concerned at first. He might think Naruto has been cursed or something. He would try to find a way to help Naruto get rid of the pacifier. But as he realizes it's not harming Naruto and is just a strange quirk, he could start to use it as a teaching tool. For example, he could say that just like Naruto needs to take care of his pacifier, he needs to take care of his ninja tools and skills.
His friends like Shikamaru would likely find the whole situation tiresome at first. He'd be thinking 'What a drag, now we have to deal with Naruto and his pacifier.' But then he might start to see the humor in it and use it as a way to tease Naruto in a friendly way. Choji would probably be more sympathetic and offer Naruto some snacks to go with his pacifier, seeing it as something that makes Naruto a bit more vulnerable and in need of comfort.
Sakura would probably be the first to jump into action. As a medical ninja, she'd immediately start examining Naruto and try to figure out the cause of the fever. She might be worried but also very focused on treating him.
Sakura would likely be very concerned. She's a medical ninja, so she'd first check Naruto's physical condition to make sure there's no underlying medical issue causing the panic attack. Then, she'd try to calm him down by speaking softly and reassuringly, reminding him of all the times he's overcome difficulties.
His friends' reactions would be intense. Kakashi, as Naruto's teacher, would feel responsible. He would gather as much information as he could about the kidnapping. His friends from Team 7 and the other ninja in the village would band together. They would know that Naruto is strong, but also that the Kyuubi is a powerful and dangerous force. They would not rest until they found Naruto. Some might be angry at the Kyuubi, while others would be more focused on just getting Naruto back safely. They might also try to find ways to communicate with the Kyuubi, if possible, to negotiate for Naruto's release.
Sakura would probably be initially shocked. But then she'd quickly start asking a million questions about how he got them and if they're causing him any pain. She'd also be worried about how this new development might affect Naruto in battles. Sasuke, on the other hand, would likely be more reserved in his reaction. He might just raise an eyebrow and say something like 'Interesting, dobe.' But deep down, he'd be curious too. Shikamaru would probably just sigh and think 'What a drag, now there's more to worry about with Naruto.'
Sakura might be initially suspicious. She is a smart girl and would wonder about the butler's intentions. She might keep a close eye on him to make sure he doesn't harm Naruto in any way.
His friends from Team 7, like Kakashi, would feel responsible for Naruto's situation. Kakashi would likely use his resources to find a proper shelter for Naruto. Shikamaru and the others might come together to form a sort of support group for Naruto. They would pool their resources, like money and food, and also try to cheer him up by sharing stories and jokes.
Sasuke, who has his own complex relationship with Naruto, would probably be in denial at first. He's seen Naruto as this strong - willed person, and the idea of him having schizophrenia would be hard to accept. But as time goes on, he would become more protective. He might train Naruto in ways to control his mind during the episodes, using his own experiences of mental discipline. As for Kakashi, he would be empathetic. He has his own traumas, and he would do his best to support Naruto, maybe sharing his own stories of dealing with difficult mental states.
Naruto would be extremely hurt. He values his friends above almost everything, so their betrayal would be like a knife to the heart. At first, he'd probably be in disbelief and try to reason with them. When he realizes they won't listen, he might become angry and lash out. But deep down, he'd still hope to win them back.
Sakura would be devastated. She had known Naruto for a long time and had come to care for him deeply. She might feel guilty for not being able to stop him. Sasuke would also be greatly affected. He and Naruto had a complex relationship. He might regret not being there for Naruto when he made the sacrifice. His friends from the village like Shikamaru and Choji would feel a great sense of loss. They would remember Naruto's always - positive attitude and feel that the village had lost a great light.
I think his friends' reactions would be mixed. Kakashi would be that calm and collected presence, giving Naruto some words of wisdom about this new chapter in his life. Hinata might be a bit sad at first because she had feelings for Naruto, but she would also be happy for him. The rest of the Konoha 11 would be excited. They would see it as an opportunity for Naruto to bring about new changes not just in Konoha but in the whole ninja world. They would all gather around to support Naruto and make sure the marriage goes smoothly.