Turn Instant Pot to Saute - Hot; Spray twice with Pam; Add chicken breasts; Sear for 2 minutes on each side; Remove; Spray with Pam; Saute Garlic for 30 seconds
Add Water, Better than Bouillon, garlic powder, salt, pepper, sun-dried tomatoes, crushed red pepper flakes, basil, thyme, and stir until simmer. Add Chicken back to broth mix
Cover the Instant Pot and secure. Set valve to seal. Set cooker to Manual/Pressure Cook - 9 minutes. When timer is up, set to Natural Pressure Release - 10 minutes. Remove Chicken. Set to saute.
Warm milk in Pyrex in microwave for 30-45 seconds to not shock the broth. Whisk in flour. Pour in broth and stir. Bring to simmer. Add grated mozzarella, stir until melted. Simmer until desired thickness. Add chicken back to sauce.
Serve by itself or we love it over spaghetti squash noodles!