In a medium bowl, whisk together the water, soy sauce (or tamari), honey, sriracha, lime juice, and grated ginger; set the sauce aside.
In another bowl, combine the flour, salt, and pepper. Toss the cubed chicken in the flour mixture to coat, shaking off any excess flour.
Heat the olive oil in a large saucepan or skillet over medium heat. Add the coated chicken and cook until pieces begin to turn golden, about 5–7 minutes, stirring occasionally.
Push the chicken to one side of the pan and add the chopped garlic to the empty space. Cook and toss the garlic for about 1 minute, until fragrant and lightly golden.
Pour the prepared sauce over the chicken and stir to combine. Continue cooking and stirring until the sauce thickens and coats the chicken, about 3–5 minutes.
Sprinkle the sesame seeds and minced chives (if using) over the chicken, toss to combine, and cook 30 seconds more. Serve hot over rice or quinoa.
Optional: for added crunch, stir in 1/2 cup cashews or water chestnuts after the sauce thickens and cook about 30 seconds until warmed through.