Place chicken breasts in a large pot of water over high heat. Bring to a boil, cooking for 30-40 minutes until chicken is cooked through and easy to shred.

Drain chicken, reserving a tablespoon or so of water.

Add water back to the pot, along with the shredded chicken and taco seasoning; stir until the chicken is well coated with seasoning.

Dice tomato; shred lettuce and cheese (if needed).

Layer tortillas with chicken, lettuce, tomatoes, cheese, and sour cream as desired.

Serve with orange slices on the side.