This meal was quite thrown together but very good. I apologize for the lack of exact measurements.

White rice (i used instant)
cilantro (fresh or dried)
lime juice
chicken breast (I just used one)
black beans
tortillas

I cooked the rice to the requirements on the box. When it was sitting I stirred in cilantro and lime juice.
I cut the chicken into cubes. Cooked until done. I added some dried cilantro and olive oil while cooking.
Cooked black beans
I then heated the tortillas a bit. (This is optional.) I put rice, then black beans and chicken on top. Rolled up and enjoyed.

I also added salsa and sour cream to mine for a little different flavor.