Creating Slow Cooker Italian Chicken and Peppers is as easy as following these simple steps:

1. Prepare the Slow Cooker: Lightly grease the bottom of your slow cooker with olive oil to prevent sticking.
2. Add Chicken: Place the boneless, skinless chicken breasts at the bottom of the slow cooker.
3. Layer Vegetables: Add the sliced bell peppers, onion, and minced garlic on top of the chicken.
4. Add Tomatoes: Pour the diced tomatoes over the vegetables, ensuring they cover the mixture.
5. Season: Sprinkle Italian seasoning, salt, black pepper, and red pepper flakes if using, over the contents.
6. Add Broth: Pour the chicken broth into the slow cooker, allowing it to seep through the layers.
7. Cook: Cover and cook on low for 6-8 hours or on high for 3-4 hours until the chicken is tender and cooked through.
8. Shred Chicken: Once cooked, use two forks to shred the chicken right in the slow cooker, mixing it with the vegetables and juices.
9. Garnish: If desired, sprinkle fresh basil or parsley on top before serving.

These straightforward steps will guide you to a delicious meal that everyone will rave about!