Prepare sauce: In a medium saucepan, combine first 6 ingredients (salsa through water); bring to a boil, stirring often; keep warm. Meanwhile, in a plastic or paper bag, combine chili powder, ginger, garlic powder and pepper; add chicken strips; close bag and shake until coated. Heat the oil in a large skillet over medium-high heat; add chicken strips and stir-fry for 2 to 3 minutes or until cooked through. Spoon the sauce onto individual dinner plates and arrange the chicken strips on top; sprinkle with sesame seeds then top with green onions.