The Spireites, runaway leaders at the beginning of the season, have failed to win a Sky Bet League Two fixture in seven outings since bitter rivals Mansfield ended their unbeaten start to the campaign with a 1-0 success at the Proact Stadium on September 28.
Paul Cook's team are still third in the table though and just two points off top spot, despite drawing four of their last five league games.
Successive wins against Daventry and Rochdale this week in the FA Cup and Johnstone's Paint Trophy respectively have hinted that Chesterfield could be about to hit their straps again.
Those victories extended the Spireites' unbeaten run to five matches in all competitions and Roberts insists he and his team-mates will head to Torquay brimming with confidence.
"We haven't won in seven league matches but in all competitions we're five games unbeaten, so it depends how you want to look at it - is the glass half empty or half full?" Roberts told Press Association Sport.
"We set out to win all three matches this week and it's so far so good, we're nearly there. We need another big performance on Saturday and it will top off a great week.
"We've just pulled apart one of the best sides in the division in Rochdale, beating them 3-0, so we go down to Torquay confident and looking bright.
"We need a win in the league now. We've had two back-to-back in the cups this week and any win gets the morale up, but now we need to get back on track in the league.
"It will be tough at Torquay but we'll go there confident, unbeaten in five matches and looking at the positive side - not the fact that we haven't won in the league for a while.
"I think if we play like we did (against Rochdale) then we will win the game."