To prepare sauce, combine chicken broth through sesame oil in a bowl, stirring with a whisk. Set aside.
To prepare stir-fry, heat vegetable oil in a large nonstick skillet or wok over medium-high heat. Add onions, garlic, ginger, and chili paste; stir-fry 15 seconds. Add scallops; stir-fry 1 minute. Add water chestnuts; stir-fry 1 1/2 minutes. Add sauce mixture and peas. Bring to a boil; cook 1 minute or until thick. Stir in peanuts. Serve with rice.