Warm olive oil in a large sauce pan or saute pan. Add the sliced onions. Saute the onions on high heat for 5 to 7 minutes or until they are soft ,golden and translucent.
Add the minced garlic, ground cloves, ground coriander and saute. Now add the chicken pieces, diced bell pepper, and salt. Turn the to high stirring frequently for another 4 to 5 minutes or until the chicken has a golden color and coated with the spices. Turn the heat down to low, cover the chicken and allow it to simmer for 12-15 minutes, stirring every 5 to 7 minutes.
To make the Herb Green Masala, Trim the bottom inch of the cilantro bunch, rinse the bunch in cold water, to remove dirt and freshen the leaves, set aside to dry in a colander or over paper towels.
Rip the mint leaves off the stems, rinse, and set aside. Trim the green onions, chives and roughly chop them. Cut the ginger about 1/2-inch pieces.
In a blender bowl, combine herbs, cashews, yogurt, 1 cup of water, whole chillies, chopped ginger and salt. Blend until smooth. Then add the cilantro with stems, mint leaves, green onions, chives, and blend until smooth. Add a few tablespoons of water as needed. The green masala sauce should be bright green.
The chicken and bell pepper should be cooked by now. If there is still some of liquid, take the lid off and cook on high heat for 3 to 4 minutes to reduce the liquid.
Add the green masala to the chicken, turn the heat to low medium and bring the chicken just a simmer. Immediately turn the heat off, over cooking will turn the bright green color if left the chicken to continue cooking. .
Serve!