Add the olive oil and garlic to a large deep skillet and sauté over medium heat for 1-2 minutes, or until the garlic is fragrant. Add the ground turkey, oregano, salt, and pepper to the skillet. Continue to sauté until the turkey is cooked through (about 5 minutes).
While the turkey is cooking, slice the olives and sun dried tomatoes. Once the turkey is cooked through, add the rice, frozen spinach (no need to thaw first), olives, and sun dried tomatoes to the skillet.
Add the chicken broth and stir until everything is very well combined. Place a lid on the skillet, turn the heat up to medium high, and allow it to come up to a boil. Once it reaches a boil, turn the heat down to low or medium low, and allow it to gently simmer for 15 minutes. Use the lowest level of heat that maintains a steady simmer in the skillet.
After 15 minutes, give the skillet a brief stir, replace the lid quickly, turn off the heat, and allow it to sit for an additional 10 minutes.
While the skillet is resting, zest half of the lemon and slice it into wedges. Roughly chop the parsley. Give the skillet a final fluff and stir, then top with lemon zest, parsley, and crumbled feta. Serve with lemon wedges to squeeze over top.