While meat is cooking, heat pita bread in a 400 degree oven for about 5 minutes. You will want them a little firm, but not all the way toasted. Remove from oven.
Whisk together yogurt, lemon juice, garlic and salt. Set aside.
To assemble: spread 1 tablespoon tomato sauce per pita, top with ½ cup fresh spinach, divide meat mixture evenly amongst the four pitas. Top with 1½ tablespoons each of crumbled feta. Place pitas back in oven for about 4-5 minutes or until hot. Remove and top with fresh minced mint and drizzle each with some yogurt sauce.
Notes
Skyr is an Icelandic dairy product like yogurt and can be purchased in the dairy section next to the yogurt. It is creamier which works well for this recipe.
Recipe by Nutritious Eats at https://www.nutritiouseats.com/lamb-and-spinach-pita-pizza/