Poke the sausage with a fork in several places, to keep them from exploding. Spray your skillet with cooking spray. Add sausage, and a little water. Cook over medium-high heat until sausages are browned, turning occasionally. (This will take about 15 minutes.) When they are finished, transfer sausages to a plate and allow them to cool. In a soup pot, combine 2 cups of broth, the onion, the peppers, and garlic. Bring to a simmer over medium heat. Cover and allow this to simmer about 30 minutes, or until the peppers are tender. Remove the casings from the sausages, and slice the sausages into thin round slices. Add them to the pot. Add the remaining broth, water, oregano, boullion cubes, and pepper. Simmer uncovered for 10 minutes. Add the pasta and simmer until the pasta is cooked, about 10 minutes. Ladle into soup bowls and enjoy!