Prepare the rice according to package instructions.
In a bowl, combine the black beans and cooked rice.
Warm the flour tortillas on a skillet for about 30 seconds on each side.
Lay one tortilla flat on a plate.
Add half of the rice and bean mixture to the center.
Top with diced grilled chicken and shredded cheese.
Spoon salsa over the filling, followed by avocado slices.
Add a dollop of sour cream and sprinkle with fresh cilantro.
Fold in the sides of the tortilla and roll it tightly from the bottom up.
Repeat with the second tortilla and serve immediately with lime wedges.