Preheat grill to medium high heat.
In a medium-large bowl (it's a small amount of sauce, but you'll add all your bok choy to it after), combine honey, sesame oil, vinegar, soy sauce, ginger and sesame seeds. Whisk to combine and set aside.
Slice ends off bok choy, separate and rinse all leaves clean and then pat dry. Drizzle with a little oil, just enough to lightly coat once rubbed in with clean hands and sprinkle very lightly with salt and pepper.
Place bok choy in a grill basket over heat and using tongs, toss often till leaves are charred and wilted, it only takes a few minutes.
Transfer bok choy to bowl of sauce and toss to coat. Serve immediately.