How to Make It
Heat oil in a large skillet over medium-high. Sprinkle chicken with 1/4 teaspoon salt and 1/4 teaspoon black pepper. Cook chicken until browned, about 2 minutes per side. Set aside.
Coat a 5-quart slow cooker with cooking spray. Stir together stock, farro, shallots, remaining 1/4 teaspoon salt, and remaining 1/4 teaspoon black pepper in slow cooker. Top with chicken; sprinkle with olives and capers. Cover and cook on low until a thermometer inserted in chicken registers 165°F, 7 to 8 hours.
Remove chicken from slow cooker. Add chopped parsley, almonds, lemon zest and juice, garlic, and red pepper to farro mixture; stir until creamy. Garnish servings with parsley leaves.