Day of the Iguana

Day of the Iguana is the third book in the Hank Zipzer series by Henry Winkler and Lin Oliver. It was first published in 2003 by Grosset & Dunlap. The title is a reference to "The Night of the Iguana", a play by Tennessee Williams.
Plot summary.
Hank and his two best friends, Frankie and Ashley, perform magic tricks at Hank's 3-year-old cousin's birthday party. Performing at the party means that Frankie will have to miss "The Mutant Moth That Ate Toledo," a movie he has been looking forward to, but Hank promises to record the movie for him. However, since Hank has dyslexia, he accidentally records the wrong channel, making Frankie very upset.
Hank takes apart a cable box to see how it works for his school science project, but then his sister's pet iguana, Katherine, lays eggs in it. Afraid that his father will discover the cable box taken apart, Hank orders a new one. Tom, the new cable box installer, happens to be knowledgeable about iguanas. That night they witness 23 baby iguanas hatching. Tom agrees to give Hank a tape of "The Mutant Moth That Ate Toledo" in exchange for a baby iguana, and Hank and Frankie watch the movie together.