1) About 6 hours before serving this dish, mix the ingredients for the yogurt dip, and store in the fridge.
2) One hour prior to the meal, slice the chicken breast in to 1 inch wide strips and place in a shallow bowl. Drizzle with olive oil (to your preference) and mix in about 1 tblsp steak seasoning. Toss to coat, and set aside.
3) Grill the chicken until cook through, and set on a plate for 5 minutes to rest. Slice in to bite size pieces.
4) Assemble gyros: place pita flat on a plate, add chicken, hummus (optional), feta, and yogurt dip. We like to heat the pita just a bit before assembling the ingredients.
This photo does not show homemade photos. It was hot as balls in my house, and heating my oven to 500 degrees sounded like as much fun as getting a pap smear from Edward Scissorhands.
Many people like to add grilled or raw onions to this, and while I'd love to do that, I'd also love to not smell farts all night from my dear husband.