Add the dry pasta to the Instant Pot bowl along with the chicken broth.
Layer the sliced chicken on top of the pasta followed by the turkey ham. Sprinkle all the seasonings on top and then cover the pot. Set the Instant Pot lid to ‘seal’ then press the ‘manual’ button and set the timer for 10 minutes, cooking on high pressure. When the timer goes off, let the Instant Pot sit for another 10 minutes before opening the steamer valve.
Open the lid and add the milk and cheeses to the pot. Stir until the cheeses is melted the divide into bowls.
Put the butter into a small saute pan to melt then add the breadcrumbs. Cook over medium heat, stirring occasionally until the breadcrumbs have browned.
Sprinkle the toasted breadcrumbs over the chicken casserole and serve!