In a saucepan over high heat, combine the rice and water. Bring to a boil. Reduce the heat to low, cover and simmer until the water is absorbed and the rice is tender, about 30 to 45 minutes. Add more water if necessary to keep the rice from drying out. Transfer to a small bowl to keep warm.
Cut the meat into 4 equal portions. Put the meat in a small bowl and pour Italian dressing over the top. Rub the dressing into each piece. Cover and place in the refrigerator for at least 20 minutes to marinate, turning as needed.
Prepare a hot fire in a charcoal grill or heat a gas grill or a broiler. Away from the heat source, lightly coat the grill rack or broiler pan with cooking spray. Position the cooking rack 4 to 6 inches from the heat source.
Thread 2 cubes of meat, 2 green pepper pieces, 2 cherry tomatoes and 2 onion wedges onto each skewer. Place the kebabs on the grill rack or broiler pan. Grill or broil the kebabs for about 5 to 10 minutes, turning as needed.
Divide the rice onto individual plates. Top with 1 kebab and serve immediately.