Don Anderson, a sign painter hired by Harman, coined the name "Kentucky Fried Chicken". For Harman, the addition of KFC was a way of differentiating his restaurant from competitors; a product from Kentucky was exotic, and evoked imagery of Southern hospitality. Harman trademarked the phrase "It's finger lickin' good", which eventually became the company-wide slogan. He also introduced the "bucket meal" in 1957 (14 pieces of chicken, five bread rolls and a pint of gravy in a cardboard bucket). Serving their signature meal in a paper bucket was to become an iconic feature of the company.

Based on this passage, where did the name kentucky fried chicken come from? Let's give stream of consciousness first:
The relevant sentence in the passage is: Don Anderson, a sign painter hired by Harman, coined the name "Kentucky Fried Chicken".
So, the final answer is Don Anderson.