Line a baking sheet with aluminum foil. Arrange 20 frozen chicken wings (drumettes and flats) in a single layer on the sheet, leaving space between pieces.
Place the baking sheet in the oven immediately — you do not need to wait for the oven to finish preheating. Start timing when you put the wings in.
Bake for 50 minutes, or until an instant-read thermometer inserted into the thickest part of a wing (avoiding contact with bone) reads 160°F.
Remove the wings from the oven and let them rest for 5 minutes.
If desired, toss the wings in your favorite barbecue or Buffalo sauce before serving.