Set the Instant Pot to saute mode and heat the oil. Add onion and garlic, and saute for 3 minutes.
Next, add the carrots, celery, and zucchini. Also, add the Italian seasoning, salt, pepper, and paprika. Saute for 2 minutes.
Add the tomatoes, pasta, kidney beans, and stock. Give it a good stir. Secure the lid and set the Instant Pot to Soup mode (on high pressure) for 4 minutes.
Once the Instant Pot beeps, let the pressure come down naturally for 5 minutes, then do a quick manual release of the remaining pressure.
Stir in the spinach and let the soup sit for 10 minutes. Garnish with parsley and serve.
Notes
Brown the onion and garlic before adding other ingredients to build a deep and rich flavor base.
If you're short on fresh produce, frozen vegetables can be a convenient substitute. Add them directly to the Instant Pot without thawing, adjusting the cooking time slightly.