Cut chicken wings into three sections; discard wing tips. In a large plastic bag or shallow bowl, combine flour and salt. Add wings in small batches; toss to coat. In an electric skillet or deep-fat fryer, heat oil to 350°. Fry wings, a few at a time, until juices run clear, about 9 minutes. Drain on paper towels.
In a bowl, combine sugar, soy sauce, garlic, onion and jalapeno. Dip fried wings in sauce; serve immediately.
Wear disposable gloves when cutting hot peppers; the oils can burn skin. Avoid touching your face.