Brush the chicken with 2 tablespoons of the olive oil and season with salt and pepper. Sprinkle the remaining spice mixture all over the breasts. Heat 2 large ovenproof skillets over moderately high heat and add 1 tablespoon of olive oil to each. Add 3 of the breasts to each skillet, skin side down, and cook until golden, about 4 minutes. Turn the breasts and continue cooking for another 3 minutes. Transfer the skillets to the oven and bake the chicken for about 8 minutes, or until just cooked through. Serve the chicken warm, with the raita.