In "its only fair," the point of view is?

First person point of view.

Explanation:

The first-person point of view illustrates the writing from the narrator's point of view or perspective with the use of the pronoun "I" or "We" contrary to a second or third person point of view that employs "you" or "They" as a pronoun. The narrator is the witness to the story who keeps an "eye" over the events or observes the series of events that carry the story. Thus, "It's only fair" exemplifies the first person point of view as it employs "I" or "We" which is described from Avery's point of view.

anxious,the clues in the question suggest he was embarrassed and anxious about boo radley.