Tape the edges of the pan with the painters tape.
Paint on the chalk board paint and let dry.
Pull off the painters tape.
Season the chalkboard paint by using a piece of chalk sideways and coloring the whole surface area.
Erase all the chalk.
Use E6000 to glue some twine on the back so you can hang the tray.
Place your magnetic hooks on your tray.
Use the chalk to write your menu, grocery list, etc.
Hook your BBQ utensils on your hooks.