Set the instant pot (electric pressure cooker) to sauté function.
Heat 1 tbsp olive oil and 1 tbsp butter.
Once the oil mixture is very hot, add chicken in batches and cook (it takes about three batches). Do not overcrowd the pan.
Remove the chicken to a clean plate and set aside.
Add the remaining 1 tbsp olive oil and 1 tbsp butter.
Sauté the garlic and onions.
Add the remaining ½ of the spice mix, and cook until fragrant and the onions translucent.
Add back chicken and all the remaining ingredients and stir, removing any bits stuck to the bottom of the pot.
Close the lid, press the cancel button, and change to high-pressure cooking.
Set to “poultry” mode and cook for about 15 minutes.
Wait for a natural pressure release (preferred method) or do a quick release.
Add the spinach, stir, and let it wilt for about 2-3 minutes.
Remove the portion for the baby (if less than 12m old), then season with salt to taste for the rest of the family.