Mazzara acknowledged that some viewers were unhappy with the slower pace of the zombie drama's season two, but insisted that any such issues are now "long gone".
"It was a matter of pacing; like any show, it takes a while to find it - I think we did," the showrunner told the Los Angeles Times.
"Moving on, we know what the show is. We know what's exciting about the show, we know that it needs to be suspenseful. It needs to be character-driven. It needs to be frightening. It's a tall order to do every week, but I think we've cracked it."
The Walking Dead star Laurie Holden (Andrea) recently told Digital Spy that the pace of season three "is 100x faster" than in the previous run.
Norman Reedus (Daryl Dixon) has also dismissed those who criticised the second season, arguing: "If we killed a zillion zombies last season everyone would say, 'There's no storyline, they don't talk enough' - so f**k 'em!"
The Walking Dead season three begins on FX in the UK on Friday, October 19 at 10pm. In the US, the series returns on October 14 on AMC.
> David Morrissey Walking Dead Q&A: 'The Governor will be complex'
> Danai Gurira Walking Dead Q&A: 'We've kept a lot of who Michonne is'
Watch a promo for the return of The Walking Dead below: