Combine all the Cajun spice ingredients in a small bowl and mix fully. Store in an airtight container. Bring 2 c. water to boil- add corn. Cook until bright yellow- this will probably take about 5 minutes. Remove the corn from the water. If using fresh corn, cut the kernels off the cob. Reserve 1 c. of the cornified liquid in a large mixing bowl. Wash the kale in a large basin of cool water, then strip or cut the leaves from the tough stems. Chop the leaves and discard the stems. Bring the reserved corn water to a boil and add the chopped kale. Cook for about 5 minutes, or until the kale is just tender and still bright green. When the kale is cool, toss with the corn, peppers, onion, garlic and Cajun spices. Just before serving, toss with the lemon juice.