Turn the Traeger pellet grill on to smoke and leave the lid open for 5 minutes to start the smoke. Close the lid and set the temperature to 350 degrees F.
Season the asparagus by drizzling on the oil, lemon juice, garlic powder, onion powder, sea salt, and pepper. Mix the asparagus with the seasoning to ensure every stalk is coated.
Place asparagus on the grill grates in a single layer, and close the lid. Cook for 10 minutes, and flip the asparagus over. Close the lid and cook for another 5-10 minutes.
Lemon pepper asparagus is great for meal prep because it’s great reheated, or enjoyed cold too.
Once the asparagus is cooked and cooled, you can store it in an airtight container.