Turn on instant pot or pressure cooker to warm up. Chop onion, cilantro, and cut off any fat on chicken.
Place chicken pressure cooker/instant pot. Top with onions and cilantro.
In a bowl, mix citrus juices from the cara cara oranges and limes in a bowl. Whisk in the cumin, chili powder, and remaining seasonings. Whisk in garlic.
Pour over chicken and add chicken broth to the pot.
Close and set to high pressure for 40 minutes.
Let natural pressure release and serve on tortillas with cilantro, queso fresco, and onion.