Preheat your oven to 375°F (190°C) and lightly grease a small baking dish with a touch of olive oil.
In a small skillet over medium heat, add 0.5 tbsp of olive oil and sauté the minced garlic and fresh spinach until the spinach is fully wilted.
Remove the skillet from heat and squeeze any excess moisture from the spinach, then roughly chop it.
In a mixing bowl, combine the chopped spinach, artichoke hearts, Greek yogurt, crumbled feta cheese, and red pepper flakes, stirring until well incorporated.
Season the chicken breast on both sides with sea salt, black pepper, and the remaining 0.5 tbsp of olive oil.
Place the chicken in the prepared baking dish and spread the spinach-artichoke mixture evenly over the top of the breast.
Bake for 20-25 minutes, or until the chicken reaches an internal temperature of 165°F and the topping is slightly golden.
Let the chicken rest for 5 minutes before serving to ensure the juices remain locked inside.