Place tomatoes, 1 cup broth, onion, garlic, cumin, paprika and turmeric into slow cooker.
In a large skillet, heat 1 Tbsp. oil over medium high heat. Season chicken with salt and pepper, place in skillet and cook, turning, until browned, about 8 minutes. Transfer to slow cooker. Pour remaining 1/2 cup broth into skillet, scraping brown bits from bottom of pan. Pour liquid into slow cooker.
Cook chicken on high for 4 hours. Thirty minutes before chicken is finished, stir in olives and lemon peel.
Remove chicken from slow cooker; let cool. Remove meat from bones, then return loose meat to slow cooker.
Serve stew on top of cooked couscous and sprinkle with almonds.
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