In a small bowl, combine oil, coconut aminos, fish sauce, cumin, chili powder, tomato paste, and salt. Spread 3/4 of the mixture on all sides of the beef. Reserve additional sauce.
Press the Sauté button on Instant Pot®. Add skirt steak and sear on each side for approximately 5 minutes. Remove the meat and set aside. Add onion and peppers to Instant Pot® with reserved sauce. Sauté for 3–5 minutes until onions are translucent.
Add beef broth. Set meat on the layer of onion and peppers. Lock lid.
Press the Meat button and cook for the default time of 35 minutes
When timer beeps, let the pressure release naturally until float valve drops and then unlock lid.