Prepare the turkey: Freeze the turkey breast for 30–60 minutes to make slicing easier. Slice into thin strips (~1/8–1/4 inch thick) and trim any visible fat.
Make the marinade: Mix soy sauce, Worcestershire sauce, honey, garlic powder, smoked paprika, black pepper, and optional spices in a bowl. Add turkey strips, coat evenly, and refrigerate for 4–24 hours.
Dry the turkey jerky: Oven method: Preheat oven to 160°F (70°C). Arrange strips on a wire rack over a baking sheet. Bake 4–6 hours, flipping halfway through. Dehydrator method: Set to 155°F (68°C) and dry 4–8 hours until the jerky bends without breaking.
Check doneness: Ensure the jerky is dry but pliable. It should bend without snapping and feel dry to the touch.
Store your jerky: Cool completely. Store in an airtight container at room temperature (up to 2 weeks) or vacuum-seal and freeze (up to 6 months).