Add ground turkey, almond flour, parmesan cheese, egg, salt, pepper, and 1 teaspoon Italian seasoning to a large mixing bowl. Mix with your hands until well combined.
Roll mixture into small 1-inch sized balls and place on a large baking sheet lined with parchment paper. Set the meatballs aside. (If mixture is very sticky, try spritzing your hands with avocado oil spray to assist in rolling the meatballs.)
Turn on the Instant Pot saute function and add the olive oil to the pot.
When the oil is warm, add the carrots, celery, and onion. Cook, stirring, for 4-5 minutes, until the veggies begin to soften. Add the garlic and cook for another 30 seconds. Turn off the Saute function.
Add the broth, remaining 1 teaspoon Italian seasoning, and pasta to the pot. Stir well.
Drop the meatballs into the broth. Seal the lid and cook for 3 minutes on Manual function (high pressure.) It will take the pot several minutes to come to pressure before it starts counting the 3 minutes cook time.
When cycle is complete, allow the pot to depressurize naturally for 10 minutes, then release remaining pressure.
Remove lid, stir in the chopped kale (or spinach) and add the lid back to the pot. Let sit for 5 minutes to allow the greens to cook in the hot soup.
Serve topped with additional grated parmesan cheese if desired.