Add the olive oil, lime juice, agave, and salt to a small bowl and whisk to combine. Or add the ingredients to a salad dressing shaker, jar with a tight lid, or small container with a tight lid and shake to combine. Set aside.
Heat the oil in a large skillet over medium-high heat. Add the corn and saute for 2- 4 minutes until the corn has just started to char on some pieces. Reduce the heat to medium, add the chorizo and saute an additional 4 minutes until heated through and the corn has charred a little more.
Add the lettuce, tomatoes, onion, rice, and beans to a large bowl. Sprinkle with salt and pepper, drizzle with desired amount of dressing and toss to combine.
Divide the salad mix among 4 bowls. Top each serving with chorizo corn mixture, drizzle with sour cream, and sprinkle with cheddar shreds, crushed tortilla chips, and scallions. Add ¼ of an avocado, sliced, and fanned out on each salad.
Serve each bowl garnished with 1-2 lime wedges on the side.