1Cook rice in water as directed on package. Meanwhile, in 12-inch nonstick skillet, heat 1 tablespoon of the oil over medium-high heat. Cook chicken in oil 6 to 8 minutes, stirring occasionally, until no longer pink in center. Remove chicken from skillet; cover to keep warm.
2In same skillet, heat remaining 1 tablespoon oil. Cook onion, squash and peas in oil 5 minutes, stirring occasionally. Add garlic; cook 1 minute longer. Add stir-fry sauce and chicken; cook 2 to 3 minutes longer or until heated through.
3Remove from heat. Stir in tomato. Serve over rice.