In a large skillet, over high heat, add olive oil. Season the chicken with salt and pepper. Add chicken to pan and cook about 10 minutes, stirring often. Add the frozen vegetables and cook for an additional 3 minutes, until vegetables are tender.
Prepare rice according to the package directions.
Add the teriyaki sauce and mix well with chicken and vegetables until all is coated. Continue stirring occasionally for 5 - 7 minutes until chicken is done.