Mix soy sauce, sweet cooking rice seasoning, dark sesame oil, cornstarch, and garlic in a bowl to create marinade.
Slice pork tenderloin into approximately 1-inch pieces.
Place pork into the marinade bowl and stir evenly covering the pieces.
In a second bowl, whisk chicken broth, brown sugar, soy sauce, sweet cooking rice seasoning, Worcestershire sauce, cornstarch, and dark sesame oil.
Place 2 tablespoons of oil in a wok and warm over low-medium heat.
Add the pork to the wok and stir-fry for 5-6 minutes. Set pork aside.
Heat an additional 2 tablespoons of oil in the wok, stir-fry onions and peppers for 2-3 minutes.
Mix garlic, ginger, and Chile paste; stir-fry for 15-30 seconds.
Add the sauce mixture and cook for an additional minute or until thick, stirring constantly.
Return the cooked pork to the wok with peanuts and green onions. Cook until thoroughly heated.
Serve over rice.