Combine 2tbsp lemon juice, the sesame oil and canola oil to make the marinade. Heat the wok with 1 tbsp canola oil and add the chicken chunks. Stir-fry for about 4 minutes, stirring often. Add the bell pepper, onion, snow peas and stir-fry for an additional 4 minutes until the chicken is cooked through. In a cup combine 1 ÂĽ cups of the chicken stock and cornstarch. Set aside. In a bowl, combine the remaining chicken stock, the lemon juice, soy sauce and sugar to make sauce. Add to wok and bring to a boil. When boiling, slowly stir in the chicken stock and cornstarch mixture to thicken sauce. Stir the lemon slices into sauce and heat through. Remove wok from heat. Mound about 1 cup of steamed rice on the center of a serving plate. Spoon the stir-fried lemon chicken over rice. Sprinkle with 1 tablespoon of green onions and about 1 teaspoon sesame seeds. Makes 4Â servings.