What are the themes of the book/novel "Restart" by Gordon Korman?

The novel is chock full of themes; forgiveness, redemption, the meaning of friendship, identity and how change is possible.

Explanation:

One of the major themes in the book Restart by Gordon Korman is change. Restart is a novel written by Gordon Korman in 2017. The book tells the story of Chase Ambrose, a popular star of the school's football team. Most students fear him, especially Joel Weber, because Ambrose behaves like a bully.I'd start an analysis of Restart with the book's themes. Through Chase Ambrose's eyes, we see that who you used to be doesn't have to be who you always are. His past bullying behavior shapes how people view him after his accident, but his kind and understanding post-accident behavior eventually convince the other characters that the new Chase doesn't want to live like the old.  

Another theme is the impact of bullying, not only on those bullied but on the bullies themselves. Being a bully changes the relationships Chase is able to have with his family members and with kids his own age. His stepmother doesn't trust him, his half-sister is afraid of him, potential good friends don't want anything to do with him, and his so-called friends don't have anything in common with him except the desire to wound others. As a bully, Chase has limited himself, but he'd probably never have realized it without the accident.

the switch in narration increases the proximity of the narrator to the main character and the reader can perceive information only through the filter of a single character.

cockroaches and rats often are a symbol for things that are disgusting or vile. though i don't know which play you are talking about, i hope this !