Put a large covered pot of water over high heat to be used for cooking the pasta. Use plenty of water, more water than you would for wheat pasta.
Heat the first Tablespoon of oil in a large skillet over medium-high heat with a bit of onion. When the onion begins to gently sizzle, add the remaining onion and cook, stirring often, for about 5 minutes or until the onion is softened. Add the garlic halfway through this step.
Add the salt, peppers, olives, and sun-dried tomatoes; stir.
Add the broccoli and pine nuts. Stir and cook for a few more minutes then remove from the heat.
Cook the pasta following the package directions. When ready, drain the water using a colander, then briefly rinse. Return the pasta back to its pot and season with the garlic powder, olive oil, and vegetable broth.
Add the dressed pasta to the skillet and toss with the vegetables.