These are always a hit at our house, especially with the guys. This one is also from my SIL who is a great cook (thanks Al). It requires at least one hour of marination - but is best when marinated overnight.
Clean chicken wings, cut at the joints into three pieces and discard wing tips.
In a large resealable plastic bag, combine the taco seasoning, vinegar, oil and cayenne by "squishing" the bag to make a paste.
Add the chicken wing pieces, seal the bag and "squish" until the paste is distributed evenly over the chicken pieces (if the paste is too thick then add a small amount of vinegar or water -- but remember it is a paste - almost a rub).
Marinate chicken 1 hour at room temperature or overnight in the refrigerator.
Preheat oven to 400°F.
Spread wings pieces on a baking sheet lined with foil (for easiest clean-up). Try to maintain some space between each piece - use a second baking sheet if necessary.
Brush pieces with any extra paste.
Bake at 400 for 1 to 1 1/4 hours, turning half way through the baking time.
Can be held in a crock pot to serve at a party or buffet.