For marinade, combine lemon juice, water, oil, tarragon, hot pepper sauce, salt, and garlic. Place chicken in a plastic bag and set in a deep bowl. Pour marinade in bag. Close bag. Let chicken stand 20 minutes at room temperature, turning bag frequently. Cut green or sweet red pepper into 3 cm squares. Drain chicken, reserving marinade. Thread chicken, zucchini, and red pepper alternately on 4 long skewers. Arrange skewers on the unheated rack of a broiler pan. Broil 4-5 inch from heat about 8 minutes or till chicken is tender and no longer pink; turn once and brush with marinade. Per serving: 173 calories, 27 g protein, 4 g carbohydrates, 5 g fat, 72 mg cholesterol, 83 mg sodium, 441 mg potassium.