Chicken seasoning: Mix seasonings together. Lightly coat chicken breast halves in oil and sprinkle seasonings all over both sides of the chicken. Set aside.

Grill chicken: Heat a clean, greased grill over medium-high heat. Once hot, add chicken and cook for about 3-5 minutes on each side or until cooked through (160 degrees). Remove to a plate and cover to keep warm. The chicken will continue to cook after it's removed from the grill.

Prepare burger toppings. Mash the avocado in a bowl and spritz with a little lemon juice, to keep it from browning.

Assemble: Add grilled chicken to a bottom bun. Top with cheese, mashed avocado and other toppings. Enjoy!