Step 1) Place chicken in a medium bowl. Combine lime juice and water; pour over chicken. Toss chicken to ‘wash’ well; drain.
Step 2) Cut chicken into 2-inch cubes; place in mixing bowl. Add curry powder, garlic, allspice, ginger, salt and pepper. Toss until chicken is evenly seasoned. Stir in scallions. Cover and refrigerate 1 hour.
Step 3) Heat oil in large stock pot over medium-high heat. Add chicken and sauté 7 to 10 minutes or until cooked through. Add potatoes and enough water to cover 1-inch. Place lid on pot. Bring to a boil; reduce heat and simmer 20 to 30 minutes until potatoes are tender. Remove lid last 10 minutes of cooking.