Begin cooking 3/4 pound raw pasta according to the instructions on the package.
When 5 minutes of cooking time remain, add 1 1/2 cups chopped extra firm tofu to the boiling water with the pasta. Be sure to turn up the heat to keep the water boiling after adding the tofu.
When the pasta has finished cooking, drain the pasta and tofu, then transfer them to a large mixing bowl.
Add 1 1/2 cups chopped tomatoes, 1 cup chopped bell peppers, 1/2 cup finely chopped red onions, and 1 1/2 cups drained and rinsed canned chickpeas to the mixing bowl.
Add 1 1/2 cups silken tofu, the juice of 1 medium lemon, 1/4 cup nutritional yeast, 2 tablespoons cold water, 1 tablespoon extra virgin olive oil, 1 teaspoon salt, 1/4 teaspoon black pepper, 1/2 teaspoon onion powder, 1/2 teaspoon garlic powder, and 1/2 teaspoon dried oregano to a blender, then blend until smooth.
Add the blended tofu mixture to the mixing bowl, then mix until everything is evenly coated.
Garnish with finely chopped chives before serving, if desired.