Preheat oven to 350° Fahrenheit (176° Celsius).
Place a piece of parchment paper on a rimmed baking sheet. On one half of the piece of parchment, place 1/2 cup snow peas. Place a salmon filet on top and season to taste with salt and pepper. Top with the lemon and garlic slices.
Fold the parchment over the salmon and seal the edges by making small folds all around the open edge.
Bake in preheated oven for 15-20 minutes (I baked mine for 16), or until the salmon flakes easily (USDA recommends cooking until thickest part of salmon registers 145° F, but this will result in drier salmon).
Remove from oven and let rest for a minute or two. Serve immediately.