Updates for Instapot:
Cook the vegetables and first 8 ingredients. Then pressure cook for 6 minutes, quick release, if using chicken remove veggies and cook chicken (favorite way is 7 minutes per pound of breasts with just enough stock or water to cover), remove and drain. Then shred the chicken or leave whole. Readd the veggies and sauce, add the chicken, then the oil and pasta turn to sauté. When it bubbles add the pasta and turn to warm then add the lid. Check after 10 minutes for pasta tenderness.