Heat skillet with extra-virgin olive oil, add meat and brown. Season the meat with salt and pepper, to taste, chili powder, cumin, coriander, cinnamon and paprika. Add the bay leaf, onions, bell pepper and garlic to the pan. Cook until onions are soft, 8 minutes. Add lemon juice and zest, Worcestershire sauce and tomato sauce. Stir and reduce heat to simmer.
Bring butter and stock to a boil in a pot with tight fitting lid. Add dried fruit and couscous, stir then turn off heat and set lid in place. Let stand 5 minutes. Add nuts and herbs and toss with fork.
Toast pita wedges in hot oven or under broiler. Pile chili in bowls, top with "sand" and serve with pita wedges for scooping.