Step 1: Prepare the Vegetables: Chop all the vegetables (bell peppers, zucchini, and red onion) into bite-sized pieces. Mince the garlic.
Step 2: Layer the Ingredients: In a crock pot, layer the chopped vegetables, diced tomatoes (with their juice), and Kalamata olives.
Step 3: Season the Chicken: In a separate bowl, combine the olive oil, lemon juice, minced garlic, oregano, basil, salt, and pepper. Mix well, then pour the mixture over the chicken breasts.
Step 4: Arrange Chicken in Crock Pot: Place the seasoned chicken breasts on top of the vegetables in the crock pot.
Step 5: Cook: Cover the crock pot and cook on low heat for 6-8 hours, or on high heat for 3-4 hours, or until the chicken is cooked through and easily shreds with a fork.
Step 6: Shred Chicken (if needed): Once cooked, remove the chicken breasts from the crock pot and shred them with two forks. Then, return the shredded chicken to the crock pot and stir it into the vegetables and sauce.
Step 7: Serve: Garnish with fresh parsley (if desired). Serve hot, either on its own or over couscous or quinoa.
For a richer flavor, sun-dried tomatoes can be added. To make it spicier, include a pinch of red pepper flakes with the herbs. If couscous or quinoa isn't available, a slice of whole-wheat bread goes well as a side.