Chicken with wine

6 boneless skinless chicken breast halves , cut in 1/2-inch chunks 2 tablespoons olive oil 1 teaspoon sesame oil 1 1/2 tablespoons sesame seeds 2 tablespoons[...]

1 small onion , finely chopped 2 tablespoons olive oil 1 teaspoon grated orange zest (or in strips) 1/2 cup fresh orange juice (or juice of one orange) 1/2[...]