Add the red and orange bell pepper, poblano pepper and yellow and red onion and sauté for 10-12 minutes until the vegetables start to cook down. Add the garlic and chili powder and sauté for 1-2 more minutes. Add the chicken, chopped chipotle chili peppers, adobo sauce, crushed tomatoes and chicken stock. Stir to combine and reduce the heat to medium. Add the drained black beans and simmer for 20 minutes until the chili thickens.