Check your clams to make sure they are all alive. They should all be closed tightly or, if they are open, should close tight when you give them a sharp tap or squeeze. Any that don't close tightly should be discarded.
Rinse your clams in cold water to make sure there is no sand or grit left on the outside of their shells.
Heat a 10-12" skillet (that has a tight fitting lid) on high heat with olive oil. When your oil is hot, fry up the chorizo and shallot until the shallot is translucent.
Add in your clams and mix them around so they are evenly spread out and coated in the oil/shallot mixture.
Add in the white wine and lemon juice, continue to leave the burner on high heat, cover the pan with the lid and let the clams steam for about 7 minutes.
After 7ish minutes, check the clams. They should be mostly open, if they are still not fully open, return the lid and steam for an additional 1-2 minutes. If they are mostly open, add in your herbs and stir everything around so they herbs are evenly dispersed.
Continue to steam the clams with the lid off for an additional 1-2 minutes, until all of the clams are open. If there are a couple that have still not opened at this point, discard them.
Separate the clams between two bowls then pour all the liquid over the top. Garnish with more fresh herbs and serve with a piece of crusty bread!