If using whole boneless breasts, cut in quarters for quick cooking. Try to make strips somewhat even in size for even cooking. Start Rice A Roni according to package. after adding water add can of tomatoes w/juice. Add Sazon to your taste. You can always add more later. Bring to boil, lay chicken on top, cover & turn down heat to simmer. After about 10 min stir rice & turn chicken over, I like to "bury" the chicken in the rice but I don't know if it really makes any difference. Add frozen broccoli, sometimes I add some corn. (sometimes I need to add alittle more water)  Cook about 10 more min. until rice is ready. It's so fast & easy & chicken will be very juicy.