In my Nemesis series, the chapters are all named for songs by Placebo, which is my protagonist Nick's favourite band (and one of mine, obvs). In Lavender and Gold, all the chapter titles start in 'The', and are then somehow descriptive of the chapter's contents. Most of the time when I write, though, I don't really do chapter titles, unless something really clicks with it for me. In Storms, the chapters aren't really titled, except with the name of the character whose point of view the chapter is from.