Turn on a multi-functional pressure cooker and select the "Saute" setting.
Add bacon and cook until the fat is rendered and the bacon is crisp for about 4 to 5 minutes.
Add chopped leek, onion, and garlic, cook until soft and translucent for about 5-6 minutes.
Add broth, lentils, and stir to combine. green beans, carrots, thyme.
Add green beans, carrots, thyme. Place the lid, choose "soup" and set to "10 minutes".
Allow pressure to naturally release for 10 minutes, then quick-release any remaining pressure.
Open the lid and adjust seasoning with extra salt and pepper if needed. Remove the thyme before serving. Enjoy!