11/06/2012 at 06:00 AM EST
is a football fanatic!
The former Hills
star enjoyed an egg dish and sipped on a light beer while watching some football at Barney's Beanery in West Hollywood on Sunday.
"Brody seemed very passionate about the games," an onlooker tells PEOPLE. "He was sitting at the bar, chatting with two middle-aged men. His phone was face down, he didn't seem to care about much else than the game."
While Jenner has kept a low profile since his involvement on the MTV reality show that made him famous, he makes the occasional appearance on his step-siblings' show Keeping Up With the Kardashians
"He seemed to go unrecognized and was growing a bit of facial hair. He seemed in a good mood and very low-key," the source adds.
– Dahvi Shira