I believe it has been recommended elsewhere on mud that the dealer will sell you a small touch up pen based on your paint code. It's around $20 iirc.
Yeah, only get it from the dealer. Give them your VIN and you’ll be good to go.
Depending on the size of the chip in the paint, the little brush that comes with it may make it tough to apply it neatly, so I’ve had good luck using the tip of a toothpick to be a little more precise with the application. Makes it easier to fill the crater without going over the edges of the chip.