Preheat oven to 350℉. Line a baking sheet with parchment paper (if using aluminum foil, spray with non-stick cooking spray).
Place zucchini rounds in large bowl. Add oil, Italian seasoning, chilli flakes, garlic powder, salt and pepper. Mix well.
Lay the zucchini rounds on prepared baking sheet, in a single layer.
Sprinkle with Parmesan cheese.
Bake for 10-12 minutes (until golden on top, soft in the middle).
Broil for 2-3 minutes longer to make it crispier on top (keep a close eye on it).
Sprinkle with fresh basil and serve warm.