Toss the poppy seeds onto a wide plate and add a pinch of salt and pepper. Coat the salmon fillets. Press with your fingers to stick well and make sure they're completely covered.
Heat 3 tablespoons of the olive oil in a pan and sauté the coated fillets for 2-3 minutes on each side over medium heat.
In the meantime, finely chop the cucumber and mix it with the goat cheese and 1 tablespoon of olive oil—season with salt and pepper.
Serve the salmon hot with the dip and optionally a side of seasonal low carb vegetables.