Wash the cauliflower and cut it into bite-sized florets. Place it in a large bowl.
In a small bowl, combine the smoked paprika, salt, and chili powder. Sprinkle the mixture over the cauliflower, and stir to coat evenly. Transfer the cauliflower to a steamer basket that will fit in your Instant Pot.
Place 1 cup of water in the Instant Pot, then put the steamer basket in the pot. Cover the lid and turn the vent to Sealing.
Set the pot to Manual High Pressure for 0 minutes. The cauliflower will be cooked by the time the pot comes to pressure. Use a quick release and carefully remove the steamer basket from the pot immediately after the pot comes to pressure. Serve warm.
Leftovers can be stored in the fridge in an airtight container for several days.