In a sauce pan, combine honey, soy sauce, water, rice vinegar, ginger, garlic and arrowroot powder. Blend to combine.
When the oven is ready, put salmon skin side down and green beans on a sheet pan, toss with a tiny amount of sesame oil and pinch of kosher salt, and roast for 20 minutes. The salmon might be done before the green beans - if the green beans aren't yet looking blistered, take out the salmon and let it rest, then crank up the heat and broil for 2-3 minutes to give them a little charred-ness.
Drizzle teriyaki sauce over the salmon, and a pinch of red pepper flakes over the green beans.