The singer maintained that the track - which reached number two on the UK chart - was a great pop song, but she didn't like that it didn't mean anything to her.
Asked how she has changed as an artist, Church told Digital Spy: "I'm more stronger in my conviction of what I want to do.
"When you're first trying to write, people tell you, 'That's no good, it's pretty s**t really'. It knocks you for six so you generally tend to go along with it.
"That was the case with 'Crazy Chick'. I presented an album that I had been writing with different people when I was 16/17, to which the record company said, 'It's alright, it's not great, so we'll slap a couple of singles on it and get it out'."
She continued: "I was furious and then it was 'Crazy Chick' and this, that and the other - so I hated that song from its conception.
"I understood it was a pop hit, but I hated it because it didn't mean anything - I don't think it helped anyone with their emotional problems - and it was just a bit of throwaway pop, which I wasn't about."
Church recently released her new EP O N E, which includes latest track 'How Not To Be Surprised When You're A Ghost'.
> Charlotte Church interview: "I'm no longer a product"
Watch the music video for Charlotte Church's 'How Not To Be Surprised When You're A Ghost' below: