Cut chiles in half lengthwise; remove and discard seeds and membranes. Place chiles, skin side up, on a baking sheet, and flatten with palm of hand. Broil 5 1/2 inches from heat (with electric oven door partially opened) 10 to 15 minutes or until charred. Place chiles in ice water until cool. Remove from water; peel and discard skins.
Chop chiles, and place in a large bowl. Add red pepper and next 5 ingredients; toss well.
Combine shallots and remaining ingredients in a jar. Cover tightly, and shake vigorously. Pour over rice mixture; toss gently. Cover and chill thoroughly.