Make Tzatziki sauce. mix yogurt, dill, cucumber, lemon juice, onion powder, and salt in a small bowl and let marinate in the fridge for 1 hour.
Preheat oven to 420 degrees
Prepare your dipping station. in 1 medium-sized bowl mix breadcrumbs, dried dill, and Greek seasoning. In a second medium-sized bowl, mix eggs, and olive oil.
Coat each zucchini slice with egg mixture, followed by coating each zucchini slice with the breadcrumbs. Place each slice directly on the sheet pan once it's been coated. You can use tongs to coat the zucchini if you don't want to use your hands.
Place the zucchini slices in the oven. Cook for about 20 minutes, or until the zucchini is crispy to your satisfaction.
Remove from the oven. Top with your favorite Greek toppings, tomatoes, kalamata olives, feta cheese, and Tzatziki sauce.