Members of the controversial Westboro Baptist Church were seen protesting outside the HP Pavilion at San Jose, holding signs criticizing homosexuals and reportedly chanting about Lambert's sexuality.
Lambert "came out" in an interview with Rolling Stone magazine in June -- a month after he finished as runner-up on the hit TV talent contest.
But Michael Sarver, one of the 10 finalists singing at the concert, told fans from inside the venue that Lambert wasn't fazed by the commotion outside.
Sarver wrote on his Twitter page, "Funny how people think it's a good idea to mess with a big Texan and his AI (American Idol) family. Adam is just fine, shakes it off and so should we.
"We are together in this thing. You mess with one you mess with all ten. We are strong and we are 1. For those outside protesting I say do not judge less ye be judged yourself. Guys don't mind these people, we are a strong family."
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