1. Place 2 jelly-roll pans in oven. Preheat oven to 450°.
2. Combine onion, carrots, and 1 tablespoon oil in a bowl; toss
well. Arrange carrot mixture on 1 preheated pan; sprinkle with 1/4
teaspoon salt. Bake at 450° for 10 minutes.
3. Combine 3/8 teaspoon salt, 1/4 teaspoon black pepper, and next 4
ingredients (through red pepper) in a small bowl. Sprinkle chicken
evenly with spice mixture. Heat a small skillet over medium-high heat.
Add 1 teaspoon oil to pan; swirl to coat. Add chicken to pan, skin side
down; cook 5 minutes or until browned and skin is crisp. Remove chicken
from pan. Add chicken to vegetable mixture, skin side up. Bake at 450°
for 20 minutes or until chicken is done and vegetables are tender.
4. Combine remaining 1 teaspoon oil, grapes, remaining 1/8 teaspoon
salt, remaining 1/4 teaspoon black pepper, and olives in a medium bowl;
toss well. Place grape mixture on remaining preheated jelly-roll pan.
Bake at 450° for 15 minutes or until grapes are charred and beginning to
soften, stirring occasionally. Place 1/2 cup vegetable mixture and 1/2
cup grape mixture on each of 4 plates. Top each serving with 1 chicken
thigh. Sprinkle with parsley.