In a bowl mix the chicken, lemon juice, ginger, coriander, cumin, yogurt, turmeric, and red pepper flakes (if using) until well combined. Set aside for 20 minutes.
Season the rice with salt and pepper then cook according to the instructions on the package. Once done season with salt if needed and cover with a lid to keep warm.
Heat a non-stick pan over medium heat. Once hot add the oil and onion and saute until soft. Then add the bell pepper and garlic, saute until the garlic starts to turn golden brown. Then stir in the tomato paste.
Add in the chicken and marinade; cook the chicken to an internal temperature of 160 degrees using a thermometer. (Add a little water a tablespoon at a time if needed to thin out the sauce)
Serve the chicken with rice. Garnish with cilantro and jalapeno (if using). Serve with bread drizzled with olive oil, seasoned with salt, pepper, and rosemary.