Combine 2 teaspoons oil, 1/2 teaspoon crushed pepper, 1 teaspoon garlic, salt, and shrimp in a bowl. Cover and marinate in refrigerator 10 minutes.
Flatten bell pepper pieces with hand. Place bell pepper and eggplant on a baking sheet. Lightly coat with cooking spray. Broil 10 minutes or until tender, turning pieces occasionally. Cut bell pepper and eggplant into 1-inch pieces.
Combine 1 teaspoon oil, 1/2 teaspoon crushed red pepper, 1 teaspoon garlic, vinegar, oyster sauce, chili garlic sauce, and ginger in a small bowl.
Sprinkle shrimp with sesame seeds. Heat a large nonstick skillet coated with cooking spray over medium-high heat. Add shrimp, and sauté 2 minutes or until shrimp are done. Place in a large bowl.
Add bok choy and water to pan; cover and cook 3 minutes or until bok choy wilts. Add bell pepper, eggplant, bok choy, onions, and cilantro to shrimp. Drizzle with vinegar mixture; toss.