Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
Boil the russet potato until fork-tender, peel, and cut into very small cubes.
In a non-stick skillet over medium heat, add the avocado oil and cumin seeds until they sizzle.
Add the minced garlic and grated ginger, sautéing for 30 seconds until fragrant.
Add the ground turkey to the skillet, breaking it up with a spatula, and cook until browned and fully cooked through.
Stir in the cubed potatoes, green peas, garam masala, turmeric, sea salt, and black pepper, cooking for another 2-3 minutes to marry the flavors.
Cut the whole wheat tortilla into four equal strips or wedges.
Place a portion of the turkey and potato mixture at one end of a strip and fold it into a triangle shape, sealing the edges with a touch of water or yogurt.
Place the samosas on the prepared baking sheet and bake for 10-12 minutes, flipping halfway through, until the exterior is crisp and golden brown.
While the samosas bake, whisk together the tamarind paste, date syrup, and Greek yogurt in a small bowl to create a creamy tamarind chutney.
Serve the hot samosas immediately with the tangy chutney on the side for dipping.