Pat the salmon fillet dry with a paper towel and season both sides evenly with smoked paprika, sea salt, and black pepper.
Heat the olive oil in a non-stick skillet over medium-high heat.
Place the salmon in the skillet skin-side down (if applicable) and sear for 4 to 5 minutes until the skin is crispy, then flip and cook for another 3 to 4 minutes until cooked through.
While the salmon cooks, toast the sourdough slice until it is golden brown and firm.
In a small bowl, whisk together the non-fat Greek yogurt, lemon juice, and finely chopped fresh dill until smooth.
Thinly slice the cucumber into rounds.
Spread the creamy dill yogurt mixture generously over the toasted sourdough.
Layer the cucumber slices on top of the yogurt spread.
Using a fork, gently flake the cooked salmon into large chunks and pile them onto the toast to serve.