Peel and coarsely chop the garlic. Wash tarragon, dab dry and pluck the leaves from the stalks. Wash the meat, dab dry. Put noodles in boiling salted water and cook for about 11 minutes.
Heat 20 ml olive oil in a frying pan, fry the meat well in it and then fry for about 10 minutes, turning. Season with salt and pepper. Grate cheese. Put cheese, garlic, tarragon, pumpkin seeds and 80 ml olive oil in a high mixing bowl and puree with a blender.
Season with salt and pepper. Pour the noodles into a sieve, rinse and drain. Cut the chicken filet into thin slices. Arrange noodles, pesto and chicken filet on plates. Serve garnished with tarragon and 20 g pumpkin seeds.