Preheat your oven to 425°F (220°C).
Slice the zucchinis into thin rounds, about 1/4 inch thick.
In a medium bowl, combine breadcrumbs, grated Parmesan, garlic powder, onion powder, salt, and pepper.
In another bowl, beat the egg until well mixed.
Dip each zucchini slice into the egg, then coat with the breadcrumb mixture, pressing slightly to adhere.
Arrange the coated zucchini slices in a single layer on a baking sheet lined with parchment paper.
Bake in the preheated oven for 20-25 minutes, flipping halfway through.
Once golden brown and crispy, remove the chips from the oven and let them cool slightly before serving.