Bring water to a boil in a medium saucepan, and stir in rice and red pepper. Cover, reduce heat, and simmer 20 minutes or until liquid is absorbed. Stir in beans and tomatoes; keep warm.
Sprinkle the chicken with salt, black pepper, and cumin. Heat a large nonstick skillet coated with cooking spray over medium-high heat. Add chicken; cook 4 minutes on each side or until done. Serve chicken with rice mixture.