Season chicken generously in a sprayed 9x13 baking dish.
Cook for 30-45 minutes, until chicken reaches 165 degrees.
Once chicken is finished, place all ingredients (except for chicken and avocado) into the Blendtec blender, in order listed, and secure lid.
Select "Soups" or "Hot soup" button. (If you don't have a "Soups" or "Hot Soup" cycle/button, blend at high speed for 90-180 seconds, blending longer for hotter soup.)
Plate your chicken onto the dinner plate and ladle the soup mixture over top each chicken breast.
Garnish with some leftover fresh cilantro and slices of avocado