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He has got a lot to grin about these days!

Adam Lambert grabbed a bite at Crossroads restaurant in L.A. last night, and after the American Idol alum hit Chateau Marmont for a night cap. We wonder if he ran into Lady Gaga at the famed celeb haunt?

The guy's got to cut loose before working non-stop on all his upcoming projects!

The singer just landed a recurring role on Glee, and he's also stepping in as the front man for Queen when they perform at the iHeartRadio Music Festival on September 20.

Life is good when you're Glam-bert!