Preheat oven to 190°c - 375°f. Line a baking tray with parchment paper.
Place the chicken into a mixing bowl, and add in all the seasoning ingredients, oil, and salt and pepper to taste. Mix to combine. Place onto the prepared baking tray, spread it out, and bake for 16 minutes. Remove and rest for 5 minutes before slicing or dicing.
In the meantime, place a large saucepan over high heat. Add in the rice, water, and salt to taste, stir to combine, and bring to a boil. Reduce heat to low, place on a lid and cook for 14 minutes, undisturbed. Take it off the heat, and leave the lid on for a final 4 minutes. Remove the lid, fluff up the rice and set aside.
In a bowl, add all the pic de gallo ingredients and mix to combine.
In a separate bowl, mash the avocado, and add in the lime juice and seasoning to taste. Mix well.
Place all components into meal prep containers in separate sections (see video for inspiration). Sprinkle over the pico de gallo and spoon on the sour cream and avocado (see notes). Top with sriracha mayonnaise. Dig in.