1In a large bowl, combine the shredded chicken, black beans, cooked brown rice, diced tomatoes, diced onions, and chopped cilantro.
Mix the ingredients thoroughly until well combined.
Lay out the whole wheat tortillas on a clean surface.
Evenly distribute the chicken and black bean mixture onto each tortilla.
Top each tortilla with shredded lettuce and a spoonful of salsa.
Fold the sides of the tortilla over the filling, then roll it up from the bottom to form a burrito.
Serve immediately or wrap in foil for later consumption.