Heat oven to 400° F.
On a large rimmed baking sheet, ross together Potatoes, with the Oil, 1/2 Tbsp of Garlic, 1/2 tsp Salt and 1/4 tsp Pepper. Spread out in an even layer and roast for 15 minutes until they are just starting to soften and brown.
Push Potatoes to one side of the sheet pan and arrange Salmon down the center.
Rub Salmon evenly with 1 1/2 Tbsp of the minced Garlic and 2 Tbsp of Parsley.
Add the Asparagus to the other side of the pan.
Combine 1/4 cup of lemon juice and 1/4 cup of the melted butter together and pour the mixture over the Salmon and Asparagus.
Season everything with the remaining Salt and Pepper.
Return to the oven and continue baking until the Potatoes are golden and fork tender and the Salmon is opaque throughout, (about 10 minutes). OPTIONAL: Broil in the last 2 minutes for charred edges.
Meanwhile, in a small bowl, combine the remaining Butter, Garlic and Lemon Juice with the Wine. Serve with the Salmon, veggies and Lemon Slices.