Cook the pasta al dente according to package instructions.
In a large skillet, heat olive oil over medium heat.
Add the chicken and cook until browned on both sides.
Add minced garlic and sliced bell pepper to the pan.
Stir in the cherry tomatoes and cook until softened.
Add the spinach and cook until wilted.
Pour in the heavy cream, Parmesan cheese, and Italian seasoning.
Combine the cooked pasta with the sauce, adding reserved pasta water as needed.
Season with salt and pepper, adjusting to taste.
Serve hot, garnished with extra Parmesan if desired.