The chicken giant has partnered plant-based tech company Beyond Meat to create the nuggets, which will be sold in 66 restaurants in the Charlotte, N.C., and Nashville areas from February 3 for three weeks.
The nuggets, which are made from soy and wheat will cost from $4.29 to $15.99 and be offered in servings of four, eight, or 12, and as part of combo meals.
This latest launch follows a one-day trial in a single Atlanta store last year - which saw the nuggets sell out in hours.
"It blew us away. The proof will be in this expanded test to really tell us if this something that has legs," said Andrea Zahumensky, chief U.S. marketing officer for KFC.
"What we are really seeing in this kind of movement that is sweeping the country is a desire for people to eat less animal protein and they do it for various reasons - sustainability, health reasons. Many people do it because they want to be part of the movement and it's cool to do it."
*This article was corrected on January 29. It previously said the nuggets would launch on February 1.