Harry Potter as Error Gilderoy Lockhart

Guys, I have a question and sorry, there's no new chapter right now because I'm currently writing and stockpiling chapters. I'll be back soon, so don't worry. My question is: how can I make a chapter longer without adding real meaning, but still keep it enjoyable for you? I notice that many authors on this site extend the idea of a chapter for example, the Defense Against the Dark Arts chapter from Harry Potter, which is the sixth chapter and many authors have added far less content than I did, yet they managed to create three or four chapters out of it. By the way, this is actually the right method, because WebNovel's algorithms favor having lots of regular chapters instead of long chapters spread out over a long time.