Bring a large pot of salted water to a boil. Cook pasta until al dente, then drain, reserving 120ml of cooking water.
Heat olive oil in a large pan over medium heat. Add garlic and cook 30 seconds. Add vegetables and sauté 5-6 minutes until tender and bright.
Add cooked pasta to the pan with vegetables. Pour in lemon juice and zest, add nutritional yeast if using, and toss to coat, adding reserved pasta water to create a light sauce.
Season generously with salt and black pepper. Divide among bowls and top with toasted pine nuts.
Notes
Feel free to add more vegetables or adjust seasoning to taste.