That's how the chicks feel about it, too! They need a dark night for a good sleep like we do. Consider using a brooder plate instead, or better yet - make one yourself! It's cheap and easy, and better for the chicks (and for your bedroom at night).
Here's my setup from last year. This year I'll do it again only with a bigger box.
I made my own heating plate with a heating blanket. Heating lamps are dangerous and unnatural. I used sand for the bedding and absolutely loved it! Easy to clean, cheap (you don't throw out tons of soiled...