While the chicken is browning, juice the lemon and oranges (zest the oranges first with a peeler). Pour the seedless juice into a liquid measuring cup. Then add sherry to the 1 cup line. Set aside.
Remove the chicken to a bowl and set aside. Add the onions with a pinch of salt. Cook until starting to caramelize, about 8 minutes. Add the celery and bell pepper. Continue cooking another 5 minutes, stirring occasionally. Sprinkle with a little water if it begins to scorch or stick.
Add the garlic and spices and stir. Let cook for one minute, stirring. If the pan needs to be deglazed, add a few tablespoons of sherry and scrape up the bottom of the pan. If you are using a separate pan, scrape this mixture into your slow cooker insert.
Add the juice mixture with the peeled zest from the blood oranges and the segments from another blood orange. Add the chicken stock. Place the slow cooker insert onto the slow cooker base and cover. Cook on high for 3 hours or low for 6-8 hours.
When the chicken is finished cooking, add the cilantro, reserving some for garnish and 2 tablespoons of honey or agave. Taste for more honey/agave or salt.