Chris Hansen got the Chris Hansen treatment, sort of, when Connecticut cops confronted him and then busted him ... for bouncing checks.

The former host of "To Catch a Predator" was arrested Monday in Stamford for larceny. Cops say he failed to pay a local vendor nearly $13,000 for stuff he'd purchased in 2017 ... and allegedly gave the guy the runaround with 2 bounced checks.

According to Stamford PD, Chris bought 355 mugs, 288 t-shirts and 650 vinyl decals from a mom-and-pop shop in town for marketing events he planned to attend. The owner says the goods were delivered, but Chris bailed on his $12,998.05 tab.

The owner says after the first check bounced, he threatened to go to cops. Chris allegedly offered to make 4 partial payments, but the owner rejected that deal.

Chris then bounced a second check, and begged for more time. The owner claims Chris sent emails saying he was selling his boat to come up with the cash, but a check -- a good one -- never came ... and a warrant was issued for Chris' arrest.

He turned himself in Monday, and was booked and released from jail.