You are referring to Ch. 8 when Jem tells Atticus all about their activities related to Boo. Jem confesses all of this to Atticus to protect Boo because he does not want him to get in trouble for putting the blanket on Scout. This is also a moment in the book where we see Jem maturing.
Herein, how did Jem and Scout's perception of their father change?
In To Kill A Mockingbird, Scout and Jem have respect for their father; however, they describe him as different than most fathers during this time. Scout and Jem both call Atticus by his first name. They do not affectionately refer to him as dad. Scout mentions that her father is courteous but sometimes distant.
What does Miss Maudie say about Atticus in Chapter 10?
That's why it's a sin to kill a mockingbird.” Atticus, Scout says, is somewhat older than most of the other fathers in Maycomb. Later, Miss Maudie tells Jem and Scout that, as a young man, Atticus was the best shot in the county—“One-shot Finch.”