In a large pot, heat the olive oil over medium heat.
Add the diced onion and saute until translucent.
Add the remaining vegetables and saute for about 5 mins. Stir to keep from browning too much.
Add the chicken meat and chicken broth.
Bring to a boil, turn heat to low and simmer until the vegetables are soft.In a separate bowl, combine flour, baking powder, and salt.
Add the sourdough starter, olive oil, and egg.
Mix into a uniform dough.
With two spoons, heap big 4-5 piles of the sourdough mixture directly onto the simmering soup.
Cover with a lid and simmer for about 15 mins or until the dumplings are cooked through.