Creamy Chicken Scampi

Name: Creamy Chicken Scampi
Ingredients: 1 1/2 pounds chicken breast, cut into tenders sized pieces; 6 cloves garlic, minced; 6 tablespoons butter, divided; 3/4 cup chicken stock; 1 cup heavy cream; 1/2 cup finely grated Parmesan cheese; 6 ounces mixed bell peppers (red, yellow, orange, green), sliced; 1 small red onion, thinly sliced; 1 teaspoon dried Italian Seasoning (I use this brand); 1/2 teaspoon crushed red pepper flakes; sea salt and black pepper, to taste; freshly shredded parmesan cheese, for serving and garnish; finely chopped fresh parsley, for garnish