This is one of the many projects that I have been talking about for a while. I have been looking for a long time for a frame like this, mostly checking thrift stores. I FINALLY found what I was looking for at Ikea! I was originally looking for a mirror, but a picture frame works too.
I painted the glass with two coats of DIY chalkboard paint (1/2 cup paint to 1TBSP unsanded tile grout powder. A good tip for this is to make it in a jar with a lid so you can save the extra.). After the paint dried I covered the entire surface with chalk to "prime" it and wiped it off with dry paper towel. And now it is a functioning chalkboard. And it turned out EXACTLY how I envisioned it. Actually, I think it turned out better!