Preheat oven to 425 degrees.
Wash, dry and trim asparagus spears.
In a mixing bowl, toss to spears with olive oil. Then sprinkle with Parmesan cheese, garlic, salt, and pepper. Arrange the asparagus onto a parchment lined baking sheet in a single layer. Squeeze lemon juice over asparagus.
Roast until just tender, 12 to 15 minutes depending on thickness.
Serve Immediately.