Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
Boil the diced gold potato in a small pot of water for 5-7 minutes until tender, then drain and set aside.
In a non-stick skillet over medium heat, add the avocado oil and toast the cumin seeds for 30 seconds until fragrant.
Add the ground turkey to the skillet, breaking it up with a spatula and cooking until browned and fully cooked through.
Stir in the turmeric, garam masala, sea salt, black pepper, cooked potatoes, and green peas, cooking for another 2 minutes to meld the flavors.
Cut the whole wheat tortilla into three equal rectangular strips.
Place a portion of the turkey and potato mixture at the bottom end of a tortilla strip and fold diagonally to form a triangle, continuing to fold until the strip is sealed.
Place the samosas on the prepared baking sheet and bake for 10-12 minutes, turning halfway through, until the edges are golden and crispy.
While the samosas bake, whisk together the Greek yogurt, lemon juice, and chopped cilantro in a small bowl to create a cooling dip.