Add onion and garlic and cook, stirring occasionally, until softened, 2 to 3 minutes.
Add oregano and marjoram; cook, stirring, for 1 minute.
Add broth and chicken.
Cover, increase heat to high and bring to a simmer.
Skim any foam from the surface as the chicken cooks.
Transfer the chicken to a clean cutting board.
When cool enough to handle, remove the meat from the bones and shred.
Meanwhile, add fennel, broccolini and tomatoes to the pot; return to a simmer.
Cook until the vegetables are tender, 4 to 10 minutes.
Remove from heat and stir in pesto.
To serve, reheat and then stir in pesto.
- Daily Values (DVs) are the recommended amounts of nutrients to consume each day.
(-) Information is not currently available for this nutrient.