Lightly grease a baking pan and preheat oven to 400oF.
With cut side up, place bell peppers on prepared pan. Season with pepper and salt. Drizzle olive oil on top of peppers.
Mix well garlic, mayo, sour cream, parmesan, ½ cup mozzarella, cream cheese, spinach, artichoke hearts, and chicken in a large bowl. Season with pepper and salt. Mix well. Evenly divide mixture into bell pepper cavities.
Evenly top each pepper with remaining mozzarella and pop in the oven.
Bake for 25 minutes or until peppers are tender and cheese has melted.
To serve, garnish with chopped parsley.