It was just a replacement for those temporary chalkboard menus, the person wo did that previously left. Perhaps she has bad taste but that doesn't mean she was slacking off. Did they spend a lot of time on the chalkboard menus previously?
How much might it cost to have someone local show up and produce a decent-looking chalkboard display?
IDK, you own a business and do this sort of stuff and all sorts of red flags go off for me.