The 13-year-old, who finished runner-up on last year's series of the ITV talent show, also recommended Dannii Minogue for the spot.
Parke told What's on TV: "I went to see her last night in concert and she was absolutely amazing.
"I think she'd be a really, really good judge. I think she'd be really fair."
On Minogue, who has previously insisted that she has no plans to return to UK TV, Parke stated: "She was a really good judge on The X Factor, so why not?"
Meanwhile, Parke also confessed that he used to be intimidated by music mogul Simon Cowell.
"I was scared of him! I get really, really starstruck," he said. "The last time I saw him was quite a while ago now, I met him in the Sony offices.
"He was wandering round, he came over to me and he was just really, really lovely. He just had a normal conversation with me and was kind to everyone."
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Watch Ronan Parke perform One Direction's 'What Makes You Beautiful' below: