In a large stockpot, add sweet onions and garlic in olive oil and cook over medium heat until just tender, about 3-4 minutes.
Add cherry tomatoes and sliced peppers. Cook for an additional 3-4 minutes to allow tomatoes to burst and peppers to soften slightly.
Stir in remaining ingredients, except rice noodles and bring soup to a boil. Reduce heat to low, cover, and allow to simmer an additional 3-4 minutes, stirring occasionally.
Add rice noodles to the hot broth and stir in allow to cook as directed, they should be tender after 2-3 minutes.