I find his characters fascinating. In what way is Nicholas Nickleby tedious? Or Scrooge? Or... well let's leave it there... there a hundred others. I'm a "common reader" and never read for 'professional reasons'. So I don't delve into the way he pulls a sentence together, although sometimes recognising that he has just written another marvellous sentence.
Given the almost universal acclaim that Dickens gets, and has had, from the beginning, from serious critics & readers (and especially given that you are going to teach literature!) I think you should raise heaven and Earth to try and fix this blind spot of yours.
Try reading critics, like Bloom, who concentrate on 'appreciating' Dickens, rather than tedious sentence chopping. Maybe you are too influenced buy Oscar Wilde? Although Oscar talked a lot of sense on a lot of subjects his comments on Dickens could be another example of a great writer getting something thing very wrong (like Tolstoy's attack on Shakespeare.) Dickens was too close to him, and was so much more successful than him, in all circles and on all measures, that it's not surprising his views appear jaundiced.
Try and read his novels with a fresh eye. I gave up on Joyce and Cervantes a decade ago, but tried them again recently, and really enjoyed them. Maybe you could do the same with Dickens? Why not try (at least) a novel a year and see if you can learn to appreciate him?
What will you do if a school child comes into school after Christmas and tried to impress her English teacher by saying she really enjoyed an adaptation of Christmas Carol. "I don't like Dickens"? You are at risk of becoming a Dickensian "character"
