In a large saucepan or deep skillet, heat oil over medium heat. Once hot, add the onion and sauté for 1 minute. Add the garlic and jalepeño and continue to sauté, stirring to prevent burning, until the onion is translucent.
Add quinoa, diced tomatoes (with liquid), and the vegetable broth. Bring to a boil and then cover with a lid and turn heat down to medium-low. Keep at a light simmer (turning down heat more, if needed), with the lid on, for 20 - 25 minutes, or until quinoa is soft and liquid is absorbed.
Remove lid. Stir in the spices, cilantro, and kale. Turn heat to low, return lid and let sit until greens have wilted (about 1 or 2 minutes). If desired, top individual servings with fresh cilantro leaves and a dollop of vegan sour cream. Enjoy!