Combine first 4 ingredients; let stand 10 minutes or until foamy. In mixer bowl, combine flour and uncooked oats. On low speed of electric mixer, gradually add yeast mixture; mix an additional 2 minutes. (Dough will be soft. ) Knead on floured surface 5 times. Place in medium bowl sprayed with no-stick cooking spray, turning once to coat. Cover; let rise in warm place 30 minutes or until almost doubled. Punch dough down; divide into 4 portions. On floured surface pat each into 6 inch circle. Grill over medium hot coals 2 to 4 minutes or until bottom is golden brown. Remove from grill. On browned side, layer remaining ingredients in order listed. Return to grill. Cover; cook 4 to 6 minutes or until bottom is golden brown and cheese begins to melt. To bake in oven: Heat oven to 425 degrees. Spray cookie sheet with no-stick cooking spray or oil lightly. Pat each portion or dough into 6-inch circle onto prepared sheet. Layer with Romano, 1/2 of mozzarella, bell pepper, onion basil garlic and tomatoes. Bake 25 minutes or until crust in golden brown. Sprinkle immediately with remaining cheese.