Use a spice grinder, coffee mill, or mortar and pestle to crush the rice into a powder.
Put the rice powder into a dry frying pan on low heat and toast for about 30 minutes until lightly browned. Set aside.
Meanwhile, cook the chicken in a frying pan with a little oil. Cook until lightly browned and crumbled. Pour the cooked chicken into a mixing bowl.
Add the limes, fish sauce, chile paste, shallots, scallions, mint, and honey. Mix well.
Fill the taco boats evenly with the chicken. Top with the toasted rice and the cucumbers. Serve.