They are now without a win in three games and have won just one of the last six, leaving the playoff hopefuls four points adrift of the top six.
Only five teams in the entire league have conceded more goals than Rovers this season, but any plans to strengthen at the back in January were hit by the news this week that the club have been placed under a transfer embargo.
Indeed, they have now gone eight matches without keeping a clean sheet, which is the longest run of its kind in the Championship.
At the other end of the pitch, however, Blackburn have a potent strike force that has helped them to 10 consecutive games in which they have scored - also the longest current streak in the league.
Jordan Rhodes is expected to return to that attacking lineup having started the last match on the bench, while Bowyer has no new injury concerns to worry about.
For Charlton, it was yet another draw last time out - their 12th of the season after just 21 matches - but they would have been disappointed at being held by bottom-of-the-table Blackpool.
The Addicks are certainly a tough team to beat under Bob Peeters having lost the joint fewest number of games in the division, but they have also only picked up six wins this season, and only the bottom five have managed fewer.
Even so, they remain in the top half of the table approaching the midway point of the season, and the club's hierarchy are sure to have deemed the campaign a success so far.
Indeed, Peeters could opt to name an unchanged side despite only managing a point last time out.
Recent form: DDWDLL
Possible starting lineup: Steele; Baptiste, Hanley, Duffy, Olsson; Cairney, Evans, Williamson, Marshall; Gestede, Rhodes
Recent form: DWDLDD
Possible starting lineup: Pope; Gomez, Ben Haim, Bikey, Fox; Solly, Buyens, Gudmundsson, Cousins; Harriott, Vetokele
Sports Mole says: 2-1