Boil the chicken breast for 15 minutes. Once cooked, shred it and place it in a bowl.

Season the shredded chicken with a little salt and black pepper.

Finely chop the onion and add it to the bowl with the chicken. Add drained corn and mashed avocado. Squeeze in a little lemon juice and add more salt if needed. Mix everything well.

Place a slice of cheese in the center of each tortilla, fill with the chicken mixture, and wrap to form a burrito.

Heat each burrito in a skillet or on a grill until warmed through.