PREHEAT OVEN TO 450˚ . Toss the asparagus with garlic, oil, ⅛ teaspoon each of salt and pepper. Spread in a single layer on a large baking sheet with sides. Roast, turning one to two times, until the asparagus is tender-crisp, 10 to 15 minutes.
WHILE THE ASPARAGUS IS ROASTING, heat a small skillet over medium heat. Place pine nuts in the skillet and cook until golden and fragrant, tossing often to avoid burning. Remove the nuts from heat and set aside.
When the asparagus has finished cooking, transfer to your serving plate and then top with feta, pine nuts, lemon juice and additional salt and pepper to taste. Serve warm.