Last season saw Steve Coppell's side take the top flight by storm following promotion but this time around things have not been so easy.
"I really don't know what's happened," Kitson told the club's website .
"Maybe teams are wised up to how we play and how to nullify our main threats.
"We do look like scoring, we got one (at Sunderland) and could have had another.
"I don't like saying 'we must take positives' but the fact is that it's still within us. We just have to do it from the off."