Cut chicken into cubes and season with salt and pepper. Heat 2 T olive oil over medium heat and sauté chicken for about 5 minutes.
Boil the water for the pasta and cook until al dente. Reserve one cup of pasta water before draining. Place spinach in the bottom of the colander and set in the sink. When the pasta is al dente drain the pasta onto the spinach to steam it.
Add scallions and minced garlic and cook and stir until fragrant. Deglaze the pan with white wine. Let the white wine simmer and cook off for a few minutes.
Add the lemon juice and stir to combine. Season with salt, pepper, and chili flakes to taste. Move the chicken and scallions to the outside of the pan and form an open circle in the middle to set the Boursin in.
Simmer for a few minutes until the Boursin begins to melt. Stir to combine everything and create a cheese sauce.
Stir about 1/2 cup of pasta water into the sauce and then add the noodles and spinach. Toss to combine and coat with the sauce. Add additional pasta water if needed.
Garnish with fresh grated parmesan and enjoy!