Slice zucchini into ¼ inch rounds. You'll end up with around 16-19 slices per 8-inch squash.
Place zucchini slices flat on two layers of paper towels to absorb some of their moisture.
To a small skillet, add 1 cup of panko breadcrumbs and toast, stirring occasionally, on medium-high heat until lightly golden. Stay with them because they can brown quickly. Toasting the panko first adds extra crispiness to the zucchini chips - love it!
Transfer toasted panko to a small shallow bowl or plate.
In another bowl add 3-4 TBSP flour and season with garlic powder, cayenne, and salt. Mix well.
In another small bowl, add one large egg and a little dijon mustard for added flavor.
Pat zucchini slices dry with a fresh paper towel.
Dredge all the zucchini slices in flour, ensuring they're covered front and back.
Designate one hand for the (wet) egg mixture and another for the (dry) panko. One at a time, dip the floured zucchini discs in the egg mixture until fully coated, then the panko. Repeat for all, coating evenly and pressing the panko mixture into the disc as needed.
Spritz the chips with spray oil (or brush with oil using a pastry brush) on both sides and place them in a single layer on a wire cooling/baking rack atop the baking sheet.
Place baking sheet on the center rack and bake until zucchini chips are golden and crispy, approx. 25-30 minutes. Allow them to cool on the wire rack for a minute or two then serve with your favorite dip!
Notes
Recipe yields 4 servings with 4-5 zucchini chips per serving. Can serve 2 as appetizer or 4 for a light snack.Nutrition Facts below are estimated using an online recipe nutrition calculator. Adjust as needed based on choice of dip and enjoy!