Lamar Odom -- Accidental Dinner Date with Kris Humphries

How's this for awkward -- Khloe Kardashian's husband Lamar Odom came face-to-face with the Kardashian family's arch nemesis last night ... Kris Humphries ... after the two NBA players accidentally ended up at the same NYC restaurant ... at the same exact time.

The restaurant is called Catch (try the lobster mac and cheese) but we're told Kris and Lamar sat at completely separate tables ... and didn't utter a single word to each other.

According to sources, both players eventually exited the restaurant without incident.