Insulin is the most effective remedy for that. In addition, with the many years I cared for transplant patients, I found that the timeframe for prednisone to significantly raise blood glucose was about 6 to 10 hours after taking it. That is also the timeframe when people feel like eating everything in site.
Place the baking sheet on the center rack of the oven. Follow the directions on the package of wings for exact heating times, but frozen wings take approximately 25 to 35 minutes to thoroughly heat.
Pat wings dry with paper towels and transfer to a large bowl. Combine baking powder and salt, add to wings, and toss to evenly coat. Arrange wings, skin side up, in single layer on prepared wire rack. Bake wings on lower-middle oven rack for 30 minutes. Move wings to upper-middle rack, increase oven temperature to 425 degrees, and roast until wings are golden brown and crisp, 40-50 minutes longer, rotating sheet halfway through baking. Remove sheet from oven and let stand for 5 minutes.