Preheat your oven to 400°F (200°C) and line a baking tray with parchment paper.

In a mixing bowl, whisk together the Greek yogurt and eggs until smooth and combined.

In another bowl, sift together the all-purpose flour, ground flaxseed, garlic powder, red pepper flakes, baking powder, and salt.

Gradually fold the dry ingredients into the wet mixture until a smooth batter forms.

Gently stir in the fresh spinach, chives, shredded cheese, and diced ham into your batter.

Shape the dough into 12 round disks, approximately 1 inch thick, and place them on the baking tray.

Sprinkle the tops of the biscuits with the remaining cheese and bake at 400°F (200°C) for 5 minutes, then reduce to 350°F (175°C) and bake for another 20 minutes.

Check for doneness; biscuits should be golden brown on the bottom and lightly browned on top.

Remove from the oven, let cool for a few minutes, then transfer to a wire rack.