Cut the zucchini into 4 cm wide pieces and then cut lengthways into wedges. Thinly slice the onion and garlic. Roast the pine nuts in a pan until golden yellow. Cut the salmon into strips 1-2 cm wide and drizzle with lemon juice. Put some thyme aside for garnish, chop the leaves from the rest.
Heat the oil and fry the salmon in it for 1 minute on each side. Salt, pepper and remove from the pan. Add zucchini, onion and garlic to the frying fat and fry for 3-4 minutes. Season with salt, pepper and chopped thyme. Fold in the salmon and pine nuts, heat and arrange on plates. Garnish with thyme and put a dollop of crème fraîche on top of each.