Heat oven to 375°.
Optionally cut the salmon into filets.
Place salmon on a lined baking sheet and top with salt and black pepper. Roast for 10 minutes per inch of thickness. At the first 10-minute mark, check the salmon. If the thicker pieces are still not cooked through (they cannot flake with a fork), then consider removing any shorter filets or flaking off any very thin pieces and setting them aside before returning the thicker chunks of salmon to the oven to finish roasting.
Meanwhile, remove the stems from the kale. Wash, and thinly slice into ribbons.
Squeeze the juice of half a lemon over the kale, followed by enough dressing to thinly coat the whole salad.
Using clean fingers, massage the dressing and lemon into the kale. Taste the dressing and add more lemon or a clove of garlic if needed to achieve a sharp, rich flavor.
Just before serving, toss the kale with croutons and fresh parmesan. Divide onto plates.
Top with salmon (either filets or flaked into pieces). Optionally dress the salmon with extra lemon juice or an extra drizzle of dressing.