Place tomatoes, 1 cup broth, and next 5 ingredients (through turmeric) in an electric slow cooker.
Heat a large skillet over medium-high heat. Add oil to pan; swirl to coat. Sprinkle chicken with pepper and salt. Add chicken to pan; cook chicken about 8 minutes, browning on all sides. Place in slow cooker. Pour remaining 1/2 cup broth into pan, scraping pan to loosen browned bits. Pour liquid into slow cooker.
Cover and cook on HIGH for 4 hours. Thirty minutes before end of cooking time, stir in olives and rind.
Remove chicken from slow cooker; cool. Remove meat from bones; return meat to slow cooker. Discard bones.
Serve stew over couscous, and sprinkle with almonds.