Step 1: Par-Cook the Chicken: In a large pot or deep skillet, heat the olive oil over medium heat. Add the chicken chunks and season with salt and black pepper. Cook for 4 -5 minutes until the chicken is browned but not cooked through. Remove the chicken from the pot and set aside.
Step 2: Sauté the Aromatics: In the same pot, add the diced onion and cook for 3-4 minutes until softened. Stir in the minced garlic cloves and red pepper flakes, cooking for 30 seconds until fragrant.
Step 3: Add the Tomatoes and Liquid: Toss in the cherry tomatoes, white wine, and 3 cups of chicken stock. Bring the mixture to a simmer, scraping up any browned bits from the bottom of the pot.
Step 4: Cook the Pasta: Cook the Pasta: Add the par-cooked chicken, spinach, and penne pasta directly into the pot. Stir well, ensuring the pasta is submerged in the liquid. Cover and cook for 10-12 minutes, stirring occasionally, until the pasta is al dente.
Step 5: Incorporate the Spinach and Boursin: Stir in the Boursin cheese. Cover and allow it to melt for 2 to 3 minutes. Remove the cover and stir well until the cheese is melted and the sauce is creamy. Add additional stock if necessary to achieve desired sauce consistency.
Step 6: Serve and Enjoy: Taste and adjust seasoning if needed. Serve immediately, garnished with fresh herbs or grated Parmesan cheese if desired.