Rinse chicken filet, dab dry, season with salt and pepper. Fry in hot oil for about 5 minutes on each side. Clean and wash the chanterelles and let them drain well on a sieve.
Peel the shallot and garlic and dice very finely. Wash the chives, dab dry and cut into fine rolls, except for something to garnish. Cook the pasta in boiling salted water for 8-10 minutes.
Remove meat from the pan and keep warm. Sauté onion and garlic in the frying fat. Add chanterelles and sauté while stirring. Deglaze with stock and crème légère and bring to the boil. Thicken with sauce thickener and season to taste with salt and pepper.
Stir the chives into the sauce, except for about 1 tablespoon. Cut chicken fillets diagonally into thick slices. Drain noodles, arrange with chanterelles and chicken fillets. Sprinkle with remaining chives.
Garnish with some chives.