While pasta cooks, remove seeds from tomatoes and dice; peel and grate carrot; quarter the squash and zucchini lengthwise, then slice; chop broccoli into bite-sized pieces; thinly slice onion; slice jalapeños; cut pepperoni into halves. Add all to a medium mixing bowl.
In a small mixing bowl whisk together oil, vinegar, mustard, oregano, parsley, minced garlic, salt, and pepper. Add to veggies along with the cooked pasta. Toss to coat evenly.