Open the package of lentils and place them in a medium mixing bowl. Break up the lentils with a fork.
Wash the cherry tomatoes. Cut each cherry tomato in half. Add to the bowl.
Slice the salami. Add it to the bowl.
Crumble the feta cheese into the mixing bowl.
Wash the lemon with cold water. Zest it and then juice it into a small bowl using a hand juicer. Add the olive oil and salt and pepper and whisk the ingredients together. Pour the dressing over the salad and mix gently to combine. Taste and add more salt and pepper if needed.
Feta and salami are both on the salty side, so you likely won't need much more, if any more salt. Serve this on a bed of mixed greens as a main dish.