Prepare rice according to package directions.
While the rice cooks, combine scallions, ginger, garlic, chili pepper, cilantro, curry powder and a splash of the chicken broth in a small bowl and process into a paste.
Heat a large skillet over medium heat with oil. Add chicken to pan and brown, 2-3 minutes. Add spice paste and stir 1 minute to combine. Add peanut butter to the pan and whisk in broth. Bring to a bubble and whisk in yogurt, lower heat and simmer 7-8 minutes. Serve over rice.