The former police officer (played by Daniel Dae Kim) was forced to resign after being falsely accused of corruption.
"There's a resolution to Chin Ho's back-story, in terms of losing his badge in the police department," Lenkov told E! Online. "There's a real resolution to that [and] redemption for him. It plays off how you first meet him, and he comes a complete 180 [degrees] by the end of the season."
The showrunner also admitted that character development sometimes "falls to the wayside" on the CBS crime procedural.
"The one thing I really want to get all the writers to pay attention to is to make sure that we give all four leads some juicy stuff to play every week," he explained. "Sometimes we miss on that."
He continued: "I want to make sure we mine their characters week-to-week, because I really truly believe that people return to the TV shows for the characters... especially [in] this day and age."
Lenkov previously confirmed that a forthcoming episode of the show will focus on the family history of McGarrett (Alex O'Loughlin).
Hawaii Five-0 returns to CBS on January 3.