After dicing up the chicken, place it in a bowl and add flour, cornstarch, and some salt and pepper. Allow to rest while you prepare the sauce.
Prepare sauce by combining all sauce ingredients except the red pepper flakes, garlic, ginger, water, and cornstarch.
Heat the pot: In a heavy-bottomed pot, heat the oil over medium-high heat until it shimmers.
Add chicken and cook for 6-7 minutes until lightly golden brown, and cooked through. Remove from pot and allow to rest on a plate.
In the same heated pot, add the aromatics: Add more oil if necessary, and once the oil shimmers, sauté the red pepper flakes, ginger, and garlic for 30 seconds, stirring constantly. Stir in liquid sauce. Allow to simmer for 1-2 minutes. In a small mug, combine cornstarch and water and whisk to combine. Slowly add to the pan and stir.
Once the sauce is thickened, add the chicken back in and coat in the sauce. Allow to cook for a couple minutes to allow the chicken and sauce to meld.