Peel and finely dice the onion and garlic. Heat the oil in a wide saucepan. Sauté onion and garlic in it. Add rice and fry briefly. Add beans, chunky tomatoes and stock and simmer for about 20 minutes.
6-8 minutes before the end of the cooking time, place the tortilla chips on a baking tray lined with baking paper and briefly heat up in a preheated oven (electric range: 150 °C/ convection oven: 125 °C/ gas: level 1). Season soup with salt and pepper.
Wash parsley, dab dry, remove leaves and chop coarsely. Arrange soup in bowls. Sprinkle with parsley. Add warm tortilla chips.