Indeed, they have only won once in the league all season and already find themselves five points adrift of safety, albeit at such an early stage of the campaign.
One of the main priorities for Lennon to attend to will be sorting out Bolton's away form. The Trotters have lost all five of their league games on the road this season, scoring just the one goal in the process.
Only Blackpool have scored fewer goals overall this season, while things aren't much better at the other end of the pitch either having conceded 21 times in 11 games.
Lennon is considered by most to be a shrewd appointment, however, and he could make a number of changes to the side that were beaten by 10-man Bournemouth last time out.
Birmingham have also suffered a fairly disappointing start to the season, averaging a point per game so far to sit 20th in the Championship table.
Just one win in their last 10 matches in all competitions will worry Lee Clark, who could well be gearing up for yet another relegation battle following their miraculous escape last season.
Home form continues to be a major issue for the club, with just one victory in front of their own fans in their last 23 outings - a run that stretches back more than a year.
They will fancy their chances of doubling that win tally against the league's bottom club, although Clark will know that the visitors will be buoyed by their new managerial appointment.
The hosts have no new injury concerns heading into the match and could be unchanged from the side that drew with unbeaten Charlton Athletic before the international break.
Possible starting lineups
Birmingham: Randolph; Caddis, Grounds, Edgar, Robinson; Gleeson, Arthur, Reilly, Davis, Cotterill; Donaldson
Bolton: Lonergan; McNaughton, Dervite, Mills, Moxey; Lee, Davies, Spearing, Feeney; Davies, Mason
Sports Mole says: 1-1