Preheat and prep the salmon: Heat your oven to 425°F (220°C). Line a sheet pan with parchment.
Pat salmon dry with paper towels.
Season the salmon: In a small bowl, whisk olive oil, Dijon, lemon zest and juice, garlic powder, smoked paprika, salt, and pepper. Brush over the salmon.
Roast: Bake for 10–12 minutes, depending on thickness, until the salmon flakes easily and is just cooked through. For medium, aim for an internal temp around 125–130°F.
Rest and flake: Let salmon rest 5 minutes, then flake into large chunks.
Remove skin if present.
Make the dressing: In a bowl, whisk Greek yogurt, mayo, Parmesan, Dijon, anchovy, garlic, lemon juice, and Worcestershire. Stream in olive oil while whisking until smooth. Season with salt and plenty of black pepper.
Thin with a splash of water if needed.
Prep the greens: Wash and dry romaine (and kale if using). For kale, massage with a teaspoon of olive oil and a pinch of salt until slightly softened.
Toss the base: In a large bowl, toss greens with half the dressing until lightly coated. Add more dressing to taste.
Add the toppings: Gently fold in salmon chunks, half the Parmesan, and capers.
Top with croutons or roasted chickpeas and remaining Parmesan.
Finish and serve: Crack fresh black pepper over the top, add a squeeze of lemon, and serve right away.