Preheat your oven to 400°F (200°C) for the asparagus and prepare a baking tray by lining it with parchment paper.
Rinse the asparagus and trim the woody ends. Toss them lightly with half of the olive oil, a pinch of salt, and pepper, and spread evenly on the baking tray.
Place the asparagus in the preheated oven and roast for 10-12 minutes until tender and slightly caramelized.
While the asparagus roasts, pat the salmon fillet dry with a paper towel. Season both sides with salt and pepper.
Heat the remaining olive oil in a non-stick skillet over medium-high heat. Once hot, add the salmon fillet, skin-side down if applicable, and sear for about 3-4 minutes until a golden crust forms.
Flip the salmon carefully and continue cooking for another 3-4 minutes until the flesh is opaque and flakes easily with a fork.
In a small bowl, combine the cooked lentils with lemon juice, a pinch of salt, and a dash of pepper. Toss gently to blend the flavors.
To serve, plate the seared salmon alongside the roasted asparagus and top with the refreshing lentil salad. Enjoy your balanced and nutritious dinner!