By Dominik Lemanski Fast-food fans are calling fowl over big price increases at Nando’s. Its once pocket-friendly staple of a quarter chicken with two sides costs around a third more than two years ago – £10.75 compared with £8.25. And other dishes at the peri-peri chain have risen by up to 11% in a year, nearly treble the current inflation rate. They include the Fino Pitta and Sunset Burger, both with a side, which now cost £13. The chain’s popular veggie choice of a mushroom and halloumi pizza with a side has also risen by the same amount, to £12.25. And the family-friendly full platter is n…