1Slice the pork tenderloin into thin strips.
Cut the red and green bell peppers into thin strips.
Slice the onion thinly.
Mince the garlic cloves.
In a small bowl, mix the soy sauce and cornstarch until smooth.
Heat the olive oil in a large skillet or wok over medium-high heat.
Add the garlic and ginger to the skillet and stir-fry for about 30 seconds until fragrant.
Add the pork strips to the skillet and stir-fry until they are no longer pink, about 4-5 minutes.
Add the sliced bell peppers and onion to the skillet and stir-fry for another 3-4 minutes until the vegetables are tender-crisp.
Pour the soy sauce mixture over the pork and vegetables, stirring to coat everything evenly.
Sprinkle the chili flakes over the stir-fry and cook for an additional 1-2 minutes until the sauce has thickened.
Serve the pork stir-fry hot over rice or noodles, if desired.