Put Chicken Breasts in Instant Pot. Add salsa and seasoning. Pressure cook for 30 minutes, then allow for natural release.
Shred the chicken and put it back in the pot. Add the cream cheese into the instant pot and let it melt, stirring occasionally until melted.
Assemble enchiladas by sprinkling 2 Tbsp. Shredded cheese onto a flour tortilla. Add a scoop of the chicken/cream cheese mixture in the middle of the tortilla. Roll the tortilla up and place it in a 13x9 baking dish, seam down. Do the same with the remaining tortillas and chicken mixture.
Pour the green enchilada sauce over the rolled enchiladas. Sprinkle with cheese (can use fiesta blend and Monterey).
Bake for 15-20 minutes, then place under the broiler for 2-3 minutes until the top is golden brown.