Heat the olive oil in a non-stick pan over medium-high heat.
Add in the chicken and brown about 3 - 4 minutes then flip and continue to cook until center registers about 160 degrees, about 3 minutes longer.
While the chicken is cooking, in a small mixing bowl whisk together soy sauce, water, honey, brown sugar, rice vinegar, sesame oil, ginger, garlic, and cornstarch.
Stir the sauce into the pan with cooked chicken and simmer until the sauce has thickened, about 1 - 2 minutes..
Garnish with scallions and serve.