Roast the nuts and almonds one after the other in a large coated pan without fat. Take them out and let them cool down. Cut the vanilla pod lengthwise and scrape out the pulp. Finely chop the chocolate coating.
Line two baking trays with baking paper.
Beat the egg whites, 1 large pinch of salt and lemon juice with the whisks of the mixer until stiff. Add sugar and continue beating until the sugar is dissolved. Stir in vanilla pulp briefly.
Fold in nuts and almonds.
Preheat oven (electric cooker: 150 °C/circulating air: 125 °C/gas: see manufacturer). Coat the coated pan with oil and heat it up. Add the egg white-nut mixture and brown for 2-3 minutes. Pour the mixture from the pan into a bowl.
Fold in the couverture so that streaks appear.
Use a teaspoon (or ice-cream scoop) to cut off about 50 walnut-sized heaps from the mixture and place them on the baking trays. Bake one after the other in a hot oven for about 25 minutes. Take out the cookies and let them cool down.