Brocolli chicken pasta

Ingredients
Mini shell shape pasta (oriochettes)
Brocolli
Chicken
1 egg yolk
Parmesan cheese
Lemon juice

Boil the pasta till al dente. Drain but keep a small portion of the pasta water. Cook the chicken with a bit of olive oil. Add the brocolli (cut into bite size). Season with salt and pepper. Then pour in the brocolli, egg yolk and a bit of lemon juice. Add a bit of the pasta water and parmesan cheese. Mix well. Serve immediately