Preheat your oven to 400°F (200°C).
Slice the zucchini into thin, even rounds, about 1/4-inch thick.
Pat the zucchini slices dry with a paper towel to remove excess moisture.
Place the zucchini slices in a bowl and toss with olive oil, garlic, salt, and pepper.
Arrange the zucchini slices in a single layer on a baking sheet lined with parchment paper or a silicone baking mat.
Roast in the oven for 20-25 minutes, flipping the zucchini halfway through, until they are golden and crispy; baking time may vary depending on the thickness of the zucchini slices.
Optionally, sprinkle with Parmesan cheese during the last 5 minutes of roasting.
Once crispy, remove from the oven and let them cool for a few minutes.
Serve immediately as a snack, appetizer, or side dish.
Garnish with extra salt, pepper, or fresh herbs if desired.