Jay Leno suffered “serious burns” to his face Sunday when a car in his garage reportedly caught fire, but he says he’s going to be OK. The former “Tonight Show” host is being treated at the Grossman Burn Center following the incident in Los Angeles that injured the left side of his face, TMZ reported Monday. “I got some serious burns from a gasoline fire,” Leno, 72, confirmed in a statement to Variety. “I am OK. Just need a week or two to get back on my feet.” Leno, who was born in Westchester, reportedly avoided injuries to his left eye and ear when the car unexpectedly exploded. A representa…