Dice onion and chop zucchini into bite size pieces
Turn Instant Pot on to saute and add oil to the IP
Add onions to the IP with the oil and cook until soft and fragrant about 4 minutes
Add chili powder, salt, cumin, cinamon, cayenne, and nutmeg to the pot with the onions
Continue sauteing for another 2 minutes
Turn the IP off saute mode
Add pumpkin puree, rotel, chicken thighs, zucchini, and chicken broth to the IP
Stir gently to combine
Close the IP and set the nozzle to sealing
Set the IP on manual for 14 minutes
Allow the IP to come to pressure and cook for 14 minutes and then immediately manually release the pressure
Remove IP lid and remove the chicken thighs from the IP and place on a plate or in a bowl
Shred the chicken thighs with two forks
Add shredded chicken thighs back into the IP and stir to mix in
Top your chili with green onion, sour cream, avocado or tortilla chips