Heat the olive oil in a large pot over medium heat. Sauté the diced onion with the sea salt and a few grinds of black pepper, stirring occasionally for about 8 minutes until the onion becomes translucent. Add in the diced carrot and sweet potato, and cook for another 2 minutes while stirring.
Incorporate the fire-roasted diced tomatoes, chopped garlic, dried oregano, and red pepper flakes. Pour in the vegetable broth and add the bay leaves. Bring the mixture to a boil, then reduce the heat to a simmer. Cover and let it cook for 20 minutes.
Next, add the halved cherry tomatoes, chopped green beans, and diced zucchini to the pot. Stir in the chickpeas, cover again, and let it simmer for an additional 10 to 15 minutes until the green beans are tender.
Finally, mix in the white wine vinegar and chopped kale. Cook for another 5 minutes, until the kale has wilted. Adjust the seasoning to taste and serve hot.