That's a relatively minor chip and can easily be repaired by a skilled sharpener. It is likely you'll have to mail it in somewhere, but it's better to do that than trust the knife to bubba with the bench grinder at the farmers market.
To repair a chip, you pretty much grind the rest of the knife down to the deepest part of the chip so that the edge becomes unified once more. This will cause the blade to lose a bit of height, but it will also become thicker behind the edge than it was before the repair. That can negatively impact cutting performance. That's why it's a good idea to thin knives that need major chip repairs. If you take it to someone who knows what they're doing, they'll do that automatically as part of the chip repair process.
In terms of good mail in services that have fast turnaround times, I can recommend District Cutlery in Washington DC. Chip repair will run you $45, but they do a proper job. Here's an instagram post showing a similar repair to a Miyabi with a bigger chip than yours. The knife looks good as new when it's finished... though the logos and whatever got ground away during the thinning process. And it will cut better than it did out of the box.
https://www.instagram.com/p/C0tvpCAO7CP/
EDIT: I remembered Instagram links auto-embedding here on eGullet, but I guess they don't. At any rate, I hope you can click through and see the repair and know that you have nothing to worry about. I've seen way, way worse.
