Gather your ingredients.
In a large pot filled with salted water, cook the pasta according to package directions (approximately 12 minutes just 'til al dente). Preheat the oven to 350℉.
While the pasta cooks, blend together the cream cheese, sour cream, heavy cream and garlic until smooth. Season generously with salt and pepper.
By hand using a rubber spatula, mix in the rest of the ingredients, starting with the cheese, then the artichokes, spinach, red peppers, and lastly, the chicken.
When the pasta is done, drain, and mix everything together. Add the pasta mixture to an oven-proof dish, and bake until bubbly, about 30 minutes. Serve hot.