2 tablespoons extra virgin olive oil
1 tablespoon butter
1 large onion, diced small
1 large shallot, finely chopped
4 stalks celery, diced small
1 large yellow bell pepper, diced small
4 medium cloves garlic, minced
8 cups low-sodium chicken broth (more if needed)
1 pound carrots, diced small
1 Parmesan rind (optional, for added flavor)
1 ½ teaspoons kosher salt (more to taste)
⅓ cup uncooked pastina (adjust for more pasta)
2 ½–3 cups rotisserie or leftover chicken
Grated Parmesan (for serving)
Fresh rosemary and thyme (for garnish)