Cook the pasta in the instant pot by adding water, salt, olive oil, and pasta to the pot.
Heat olive oil in a large pan, then add in walnuts. Sauté until golden-brown, then remove.
Add more oil, green onions, bell pepper, salt, pepper, red pepper flakes, and dried basil.
Add in zucchini, tomatoes, capers, and minced garlic, then sauté again until the zucchini is soft.
Add the cooked pasta to the pan, stir to combine, then top with lemon juice and additional green onions.
Top off with grated parmesan, toasted walnuts, and fresh herbs.
Enjoy delicious Mediterranean flavors at home.