Add the diced bacon to a pan; cook on low heat till the bacon pieces are beginning to brown. (No oil is added as the bacon fat gets rendered down).
Once the bacon pieces start to brown, add the onion and sauté for another minute or two. Then add the mushrooms along with the spices. Season with salt and continue to sauté till the mushrooms get cooked. Remove from heat and mix in the chives.
To assemble, place a few baby spinach leaves on the wrap followed by sliced cucumber and tomatoes. Then spoon the bacon mushroom mixture on top. Finish off with the aioli and tomato sauce. Wrap into a roll tightly with a foil.
