Preheat an oven to 425 degrees f.
Place asparagus in a large bowl, and drizzle with oil.
Toss to coat , then sprinkle with Parmesan, garlic, salt, and pepper.
Arrange the asparagus onto a flat baking sheet in a single layer.
Roast in your preheated oven until just tender, 13-15 minutes depending on thickness.
Sprinkle with lemon & serve!