Serious moment from "Botched" star Dr. Paul Nassif ... who believes Colin Kaepernick should STAND for the national anthem before he's rewarded with endorsements from Nike.
The Bev Hills plastic surgeon -- who's appeared on everything from "Dr. 90210" to 'Real Housewives' -- explained that he seems to be on the same page as President Trump when it comes to the anthem.
"When the Pledge of Allegiance, songs of this country, anything is played -- we should be standing up. Hand over our hearts.