Slice pork tenderloin crosswise into thin slices and plae into bowl. Add garlic, thyme and pinch each salt and pepper. Toss to coat evenly.
Head large non-stick skillet over medium heat and brown pork, in batches if necessary.
Remove to plate.
Add oil to skillet and cook onion and pepper for 5 minutes or until beginning to golden.
In small bowl, whisk together cornstarch and water. Add spare rib sauce to skillet and bring to a boil. Add pork, pineapple and cornstarch mixture and simmer for 3 minutes or until pork has a hint of pink inside. Stir in parsley and serve over rice.