Step 1

Grab your marinade ingredients. Mix together 1 cup Greek yogurt, 1/2 lemon juiced, 3 tbs. olive oil, and 2 tsp. dried oregano in a mixing bowl. Season diced chicken with 1 tsp. salt + 1 tsp. black pepper, then add to the marinade. Place into the refrigerator for 30 minutes (up to 4 hours).

Step 2

If making tzatziki sauce: start by placing the grated cucumber onto a clean kitchen towel. Wrap it up and wring it out over the sink to try and remove as much liquid as possible. Then add to a bowl with the remaining tzatziki ingredients. Place into the refrigerator.

Step 3

Slice cucumbers and red onions. Wrap bread in damp paper towels and put into the microwave (don't heat just yet).

Step 4

When the chicken has marinated for at least 30 minutes, pull from the refrigerator. Prep your grill pan by heating it on the stove over medium-high heat and spray with cooking spray. When hot, take tongs and place chicken pieces on the pan, giving each piece space. Grill for 3-4 minutes, then flip pieces and grill another 3-4 minutes until the chicken has cooked through.

Step 5

Let the chicken cool slightly while you heat pitas for 30 seconds in the microwave. Layer pitas with a few pieces of grilled chicken, cucumber and red onion slices, and tzatziki sauce. Top with feta cheese crumbles and enjoy warm!