Heat the pot. Set the Instant Pot to sauté on high and let it preheat.
Soften the onion. Once it's warm, add the oil and onion. Sauté until the onion is translucent, 5 to 10 minutes.
1½ tbsp oil, 1 medium onion, chopped into medium cubes
Deglaze. Pour in a splash of the stock and scrape up any browned bits from the bottom.
1 quart chicken or vegetable stock
Add the potatoes and carrots. Add the potatoes, carrots, the rest of the stock, paprika, and salt. Stir.
2 medium carrots, chopped into medium cubes, 500 g potatoes, peeled and cut into chunks, 1 tsp paprika, ½ tsp salt
Add the tomatoes on top. Pour the chopped tomatoes over the top and don't stir — keeping them on top helps avoid a burn warning.
1 can canned chopped tomatoes
Pressure cook. Seal the lid and cook on high pressure for 5 minutes, then let it natural release for 10 minutes.
Add the chickpeas. Open the pot, stir in the chickpeas, and sauté on high for 2 to 3 minutes to heat them through.
2 cans cooked chickpeas, drained and rinsed
Season and finish. Stir in the marjoram, if using. Taste, then add salt and black pepper until it's where you want it.
½ tsp marjoram, black pepper
Serve.