Preheat the oven to 400ºF and spray a casserole dish with cooking spray.
Place red potatoes in the casserole dish with 1/4 cup chicken broth and place in the oven and roast for 25 minutes.
Next, cut the chicken into 1-inch squares and place it in a medium bowl. Add ingredients for the marinade to the bowl and mix well. Let chicken sit in the marinade for ten minutes.
While the potatoes are roasting prepare the sauce. Add tomato sauce, 1 cup chicken broth, coconut milk, ginger, chili powder, turmeric, garam masala, and salt into a large mixing bowl. Whisk together until well combined. Set aside.
When potatoes are done roasting remove the casserole from the oven and turn the oven temperature to 375ºF.
Add the red pepper, serrano pepper, onion, garlic, minute rice, and marinated chicken to the casserole dish with the potatoes.
Pour the sauce mixture over the vegetables and chicken. Mix well and cover with aluminum foil.
Place in the oven and bake for 45 minutes at 375ºF, stirring at 30 minutes and placing back into the oven.