In the same pan, heat 2 tablespoons olive oil over medium heat and add the shallot and garlic, stirring often, until tender and golden, about 3 minutes. Add the cooked lentils, balsamic, salt and spices and stir, warming them up. If dry, add a splash of water to loosen them just a bit. Once warm, add the kale a handful at a time, stirring, tossing and wilting. Taste and adjust salt.