Add oil to a large skillet and heat to medium-high. Season chicken breasts with garlic powder, salt, pepper, and chili powder.
Once oil is hot, add the chicken to the skillet and sauté until each side has some browning and chicken is cooked through, about 3-5 minutes per side.
Remove from heat and allow the chicken to cool. Then slice each breast into strips.
Spread the flour tortillas onto a cutting board or baking sheet. Divide the salsa and spread down the center of each tortilla. Divide the shredded mozzarella down the center of each tortilla. Slice the avocado and add the slices to the center of each tortilla. Top the avocado with your cooked sliced chicken.
To wrap the tortillas: Carefully fold the bottom of the wrap up. Then fold in the sides over the filling.
To grill the tortillas: If there’s no oil remaining in the skillet, add more or use cooking spray on the outside of the wraps. Add the wraps seam side down to the same skillet you used to cook your chicken. Press down on them as they cook. Cook on medium heat for about 3-4 minutes, flipping once, until the wrap is golden brown and cheese is melted. Serve immediately with a side of salsa or sour cream.