Justin Bieber was spotted looking somber in L.A. on Friday, October 4. The star — who has been the subject of online chatter for allegedly being connected to Sean “Diddy” Combs’ abuse — was seen in his car leaving the Chateau Marmont solo. The new dad, 30, wore a white sweatshirt and had a white and red scarf wrapped around his head as he appeared worn out. The outing came after many have speculated the “One Less Lonely Girl” singer may have been an alleged victim of the music mogul, 54, who was recently charged with racketeering conspiracy, s– trafficking by force, fraud or coercion and tran…