Boil the red rice until cooked following the instructions on the packet, then remove and drain in a colander.
Meanwhile heat a large non-stick frying pan, add the olive oil, garlic and yellow pepper and cook until the pepper begins to soften, about 5 minutes.
Add the chorizo chunks and cook until golden, about another 5 minutes.
Add the cooked rice, the prepared stock the oregano and the Piri piri sauce, mix well to combine, season to taste.
Finally add the cooked prawns, heat through for a final 2 minutes.
Transfer to a serving dish and serve.