In large, heavy pot, heat olive oil over medium heat.
Add onions, carrots, and salt and cook, stirring occasionally, until starting to soften, about 5 minutes. Add garlic and cook, stirring, one minute more.
Add rice and stir to coat lightly with oil.
Add tomato paste and cook, stirring, for one minute.
Add tomatoes, broth, herbes de Provence, red pepper flakes, and cheese rind if using. Stir to combine.
Bring to a boil over high heat, then cover tightly, reduce heat to maintain a simmer, and cook for 25 minutes.
Add kale and chickpeas, re-cover pot, raise heat to return liquid to boil, then reduce heat and simmer 15 minutes more.
Serve hot, sprinkled with grated cheese if you like.