Ensure your 100 grams of fresh methi leaves are washed, dried completely on a kitchen towel, and chopped very finely. Any excess water on the leaves will make the dough sticky later.
In a large mixing bowl, combine 1.5 cups atta, 3 tablespoons besan, 0.5 teaspoon turmeric, 1 teaspoon red chili powder, 1 teaspoon coriander-cumin powder, 0.5 teaspoon crushed ajwain seeds, and 0.75 teaspoon salt. Whisk together to distribute the spices evenly.
Add the finely chopped methi leaves, 3 tablespoons whisked yogurt, and 1 tablespoon oil to the flour mixture. Rub the mixture between your fingertips until it resembles coarse breadcrumbs and the methi is well incorporated.
Gradually add lukewarm water, a tablespoon at a time, and knead until a smooth, soft, and pliable dough forms (similar to the texture of a soft earlobe). Cover with a damp cloth and let it rest for 15 minutes.
After resting, give the dough a quick 30-second knead. Divide the dough into 8 equal-sized balls, rolling them smooth between your palms so there are no cracks.
Dust a dough ball lightly with dry wheat flour. Using a rolling pin, roll it out into a thin, even circle of about 6-7 inches in diameter. Dust with a tiny bit of extra flour if it starts to stick, but avoid using too much dry flour.
Heat a heavy-bottomed tawa or griddle over medium-high heat. Test the heat by sprinkling a pinch of flour; if it turns brown in a few seconds, the pan is hot enough.
Place the rolled thepla on the hot tawa. Cook for 30-40 seconds until you see tiny bubbles starting to surface on top. Flip it over.
Drizzle half a teaspoon of oil over the surface, spreading it evenly with the back of a spoon. Flip again and apply oil to the other side. Press down gently with a spatula, cooking for 20-30 seconds per side until beautiful golden-brown spots appear. Do not overcook or it will turn crunchy.
Remove the cooked thepla from the pan and place it in a cloth-lined basket. Repeat with the remaining dough balls. Stack them hot to keep them wonderfully soft, then serve warm or cool for storage.