Its a great fight, and a dangerous one for Conor, Kudos to him for accepting the fight, i was expecting him to fight Tony.
Even though Chandler is the "easiest fight" of the ranked opponents, he's still very powerful and dangerous, and has a lot of tools to beat Conor, even KO him.
He's not very bright fight wise, so it will be a brawl, which favors Conor.
Nevertheless, IMO Chandler will take it, he's too strong, he's been very active and seems to live a healthy lifestyle, basically eating, resting and training.
I find it fascinating that so many people have forgotten that Conor looked terrible in his last fight, then snapped his leg in half, then gained like 40lbs, is an alcoholic and coke fiend and will definitely have some ring rust.
IMO, this will be the decisive factor, in one hand you have a very active fighter, and in the other a part-time fighter.