1. set your grill up for medium-high heat.
2. rub the chicken with a little olive oil and season with salt and pepper. place chicken on grill, close cover, and cook for 5 minutes, flip and cook for 5 more minutes.
3. remove from grill and let rest on a cutting board for 3 minutes; then slice chicken into thin strips and place in large bowl.
5. place tortillas on the grill just until grill marks appear, flip and do the same to the other side. remove to working surface.
6. lay out tortillas and divide the chicken slices, avocado, and cheese evenly between all the tortillas and roll up into a burrito. makes 