Place the chicken in a microwave-safe dish coated with non-stick cooking spray.
Combine the onion, juices, soy sauce, curry powder, cumin, and poultry seasoning; pour over chicken.
Cover and microwave on high for 3 minutes; turn chicken over. Cover and microwave 2-4 minutes longer or until chicken is no longer pink and a meat thermometer reads 180 degrees. Remove chicken and let stand for 1-2 minutes.
Combine cornstarch and water until smooth; stir into cooking juices. Microwave, uncovered, on highfor 1 to 1-1/2 minutes or until thickened, stirring every 30 seconds. Serve over chicken.