In a large pot of salted boiling water, cook the whole wheat spaghetti according to package instructions until al dente. Reserve 1/2 cup of pasta water, then drain the pasta and set it aside.
In a large skillet, heat the olive oil over medium heat. Add the minced garlic and sauté for about 1 minute until fragrant.
Add the cherry tomatoes, zucchini, bell pepper, and broccoli to the skillet. Sauté for about 5-7 minutes, stirring occasionally, until the vegetables are tender but still vibrant.
Add the cooked pasta to the skillet with the vegetables. Pour in the reserved pasta water, lemon zest, and lemon juice. Toss everything together until well combined.
Stir in the chopped basil and season with salt and pepper to taste. If desired, sprinkle Parmesan cheese over the pasta and toss to combine.
Remove from heat and let cool for a minute before serving.
Notes
Serve in bright bowls garnished with extra basil and Parmesan cheese.