Evans, who finished fourth in 2007, said that the young Welsh singer could go far in the competition if he is given the right song choices.
"There was a young lad who came on and at first he was too nervous, but then he started singing and I thought, 'God, he's good'," Evans told DS. "His name was Lloyd and he had blonde hair. He has a real indie sound and he wasn't trying to sound like Boyz II Men or anyone else like that.
"He sang a couple of times and his voice was really unique. Touch wood, he'll do well. If they give him the right style of songs - and don't give him something like 'My Way' - then I think he's an interesting talent."
The reality TV singer also claimed that she is tired of watching female singers on the show attempt to imitate 2006 winner Leona Lewis.
"Leona was Leona. I don't think they should keep going for Leonas. She was a one-off," she added. "I'm fed up of hearing girls trying to warble like Leona. You've either got it or you haven't."
Evans, who has been appearing in the West End production of Blood Brothers, released a cover of Donna Summer's 'I Feel Love' last month.