Discard the herbs, and let the lentils cool somewhat, then puree in a blender along with the vegetables, working in 2 batches to avoid an explosive mess.
Cook's Note: Remember that if you put something too hot into a blender you may crack it.
Heat the olive oil in a small frying pan, and saute the chorizo slices until they curl, about 30 seconds. Turn and fry another 15 seconds. Serve the soup with the chorizo rounds on top and with some of the now bright-orange cooking oil spooned around.