In a bowl, mix chicken strips with vinegar, soy sauce, hot sauce, salt, pepper, paprika, garlic powder, and chili flakes.
Let it marinate for at least 30 minutes, or overnight for best flavor.
Place flour, beaten egg, and panko crumbs in separate shallow dishes.
Dredge each chicken strip in flour, then egg, then panko. Press the crumbs in well to coat evenly.
Heat oil in a deep pan over medium heat.
Fry the chicken tenders in batches for 5–6 minutes or until golden brown and cooked through.
Transfer to a wire rack or paper towel to drain excess oil.
In a small saucepan, melt butter on low heat.
Add chili flakes, lemon zest, lemon juice, honey, salt, and black pepper.
Stir and cook for 1–2 minutes until slightly thickened.
Drizzle or toss the fried chicken tenders with the warm lemon pepper sauce right before serving.
Serve immediately for best texture and flavor.