How many hours are on your Frontier? It takes many hours of running to even allow the chain adjusters to begin taking up slack. Sometimes the adjusters might stick in place (rarely) but other than that, they will take care of themselves. I've heard of a few vehicles getting very loose drive chains with low hours on the meter. However on most Argos, these chains require very little attention. I'm not sure how these hit and miss chain slack issues are popping up.
Everybody dies, but not everybody lives.