Whisk together soy sauce, honey, Worcestershire sauce, ground peppercorns, brown sugar, red chili flakes, garlic powder, and onion powder in a bowl.
Place beef slices in a large ziplock bag and pour the marinade over them. Seal and massage the marinade into the meat. Refrigerate for at least 4 hours, preferably overnight.
Preheat your oven to 175°F (80°C). Place beef slices on a wire rack over a baking sheet, ensuring they don't overlap.
Bake for about 3-4 hours, or until the jerky reaches your desired level of dryness.
Allow the jerky to cool before storing in an airtight container.