Wash and slice the squash into about ⅛-thick slices. Separate the larger slices from the smaller ones and fry together according to size, for a more even frying.
In a mixing bowl, combine the flour, seasoning and cornstarch. Toss in the squash to coat.
Add about 3-inches of oil in a Dutch oven or deep fryer and heat to 350 degrees F.
Place a small batch of the squash in a sifter and sift off the excess flour mixture. Add to the oil and fry for about 2 to 3 minutes or until lightly browned, stirring occasionally.
Strain from the oil and place on a paper towel in a warm place. Season immediately, to taste. Serve warm.