Can I create my own chess lessons for private consumption?

It would be nice to create lessons for myself, just to drill some patterns. Can I do that on chess.com?

You mean you want to make a checklist of some sort.  

Something like:

• Practice knight and bishop checkmate

Or maybe a study guide perhaps.

Not sure what you mean.

I mean a chess lesson like the ones at https://www.chess.com/lessons ...

Well then, no, there is nothing set up for you to make your own lessons using the tools currently available on the chess.com website. However, the technical aspects can't be that difficult these days where every phone and laptop can be turned into video production studios.

Writing quality instructional content could be the biggest problem.

I am afraid not but you could send an email to chess.com letting them know that might be a good idea!