Previous owner said it's a new chain and will do that for a bit before it stops. Dealer says it has bad spots already and should be replaced. Smh
Like you, I bought my bike with very low miles. Mine had 772 miles when I bought it in 2012.
I adjusted and lubed my drive chain last June before I rode to Deals Gap, Tail of the Dragon. Spent a week riding absolutely everywhere in that beautiful area. At the end of the week I lubed my drive chain again and rode back to Philadelphia, a total of 1,800 miles.
My point is, I haven't touched my drive chain adjustment, not even once, since I went to Deals Gap last June.