Heat oil in 5-quart Dutch oven on medium heat. Add onion; cook and stir 5 minutes or until softened. Add chicken; cook and stir 5 to 7 minutes or until no longer pink. Add ají amarillo paste, garlic salt, turmeric and cumin; cook and stir 1 minute.
Stir in potatoes and stock; bring to boil. Reduce heat to medium; simmer, uncovered, 15 minutes. Add peas and carrots; simmer 10 minutes longer or until vegetables are tender. Stir in mint. Serve with cooked white rice, if desired.