Preheat oven to 400ºF.
In a food processor pulse onion, pepper and mushroom and walnuts a few times until coarse but combined.
Add lentils then pull again until combined but still textured.
Transfer mixture to a bowl; add spices flour and tomato paste, mix until it’s able to hold shape in your hand.
Press mix out onto a tortilla evenly then roll and cut into even rounds (about 3-4 per 6 inch tortilla).
Layer rounds on a skewer and line on a baking tray.
Lightly oil and roast for 25-30 minutes.
Lightly oil again halfway through.
Remove from oven, optional top with chili oil and chives.
