Preheat the oven to 200°C (392°F). Cut the chicken wings into three pieces, discarding the small hard tip. Place the wings in a bowl, drizzle with oil and salt, and mix well. In another bowl, add flour and coat the wings evenly. Remove any excess flour and place the wings in a rectangular baking dish. Bake in the preheated oven for 30 minutes, stirring well to ensure they cook evenly on all sides. Meanwhile, in a small deep pan, melt the butter and add vinegar, paprika, garlic powder, Tabasco, sweet chili sauce, water, and sugar. Simmer over low heat for 5 minutes. Remove the wings from the oven, drizzle with the sauce, and toss to coat evenly.