In a bowl, whisk together soy sauce, honey, rice wine, hoisin sauce, sesame oil, five-spice powder, garlic, ginger, tomato paste (if using), and white pepper until well combined. Reserve 1/4 cup of marinade in the refrigerator for basting.
Place pork strips in a large zip-top bag or shallow dish and pour remaining marinade over them. Massage marinade into meat, then seal or cover and refrigerate for at least 4 hours or overnight.
Remove pork from refrigerator 30 minutes before cooking to bring to room temperature. Preheat oven to 425°F and line a baking sheet with foil.
Remove pork from marinade and place on prepared baking sheet. Roast for 25 minutes, turning once halfway through.
Brush pork with reserved marinade and increase oven temperature to broil. Broil for 2-3 minutes per side until caramelized and slightly charred, watching carefully to prevent burning.
Remove from oven and let rest for 10 minutes before slicing against the grain. Garnish with sliced green onions and sesame seeds before serving.
Notes
Storage tip: Keeps in refrigerator for up to 4 days. For best reheating, warm slices in a skillet with a splash of broth. Can be frozen for up to 3 months.