1Sprinkle chicken with salt and pepper.
2Heat oil in 12-inch skillet or 4-quart Dutch oven over medium heat. Cook chicken in oil about 15 minutes, turning occasionally, until brown on all sides. Cover and cook over low heat about 20 minutes or until juice is no longer pink when centers of thickest pieces are cut. Remove chicken from skillet with tongs.
3Drain all but 1 tablespoon drippings from skillet; heat over medium heat. Cook onion in drippings, stirring occasionally, until tender; reduce heat. Stir in peanut butter, chili sauce and red pepper. Gradually stir in water, stirring constantly, until peanut butter is melted.
4Add chicken. Spoon sauce over chicken. Heat to boiling; reduce heat. Simmer uncovered about 5 minutes, spooning sauce frequently over chicken, until sauce is slightly thickened. Serve sauce over chicken. Sprinkle with peanuts and bell pepper.