Heat a grill pan under medium-high heat or fire up the BBQ.
Drizzle asparagus spears with 1 tablespoon olive oil, ¼ teaspoon salt, and a pinch of pepper.
Grill asparagus for 5-6 minutes until slightly charred and tender.
Meanwhile make the vinaigrette by adding Perfect keto greens powder, parsley, lemon juice, lemon zest, olive oil, sweetener, and remaining salt and pepper to a high-speed blender. Mix on high until smooth. Adjust seasoning to taste.
Cut asparagus into 1” pieces and drizzle with vinaigrette. Toss to coat. Add to a large bowl and serve cold, warm, or room temperature.