For a more intense citrus flavor, consider adding a tablespoon of kumquat zest along with the sliced kumquats. If you prefer a less tart flavor, blanch the sliced kumquats in boiling water for 1 minute before adding them to the skillet. Toasted pine nuts or slivered almonds make a wonderful addition for added texture and nutty flavor. For a richer flavor, try using bone broth instead of chicken stock. Multi-colored quinoa adds visual appeal, but any type of quinoa will work well in this recipe.