Wash and dry the chicken breast, then cut into strips.
In a bowl, stir together the olive oil, soy sauce, tomato paste, a pinch of cumin, a pinch of chilli flakes, and a pinch of paprika powder. Add the chicken strips and mix to coat. Refrigerate for at least 3 hours.
Heat a skillet over medium-high heat. Sear the marinated chicken strips for 5-6 minutes until cooked through (internal temperature 74 °C / 165 °F). Season with sea salt from the mill to taste.