Marinate the chicken breasts in the tamari, lime juice, and 2 tablespoons of avocado oil. Allow it to marinate for an hour in a zip top bag. Flipping over halfway through the marination time. In the meantime, wash lettuce and spin it dry.
Slice half of a bell pepper by cutting off two sides from both a red and yellow bell pepper. Slice the red onion into thick slices. Keeping them large like this will help them to not fall through the grate on the grill. Toss the peppers, including jalapeno in ½ T avocado oil, ¼ t salt and ¼ t black pepper. Set aside for the grill.
Combine the rest of the lime juice, olive oil, 1 teaspoon of kosher salt and one grated garlic clove into a small bowl or measuring cup. Whisk to combine. Set aside.
Preheat a grill until hot (about 350 F +). Add the chicken and cook on the first side until nice grill marks form. Flip them and cook on the other side until nice grill marks form. Flip one last time and cook until meat is cooked through and reads 165 F on a meat thermometer.
Grill the veggies along side the chicken and cook until softened and have nice grill marks.
Slice the bell peppers into thick slices. Prepare the salad plates by topping each with 2 cups of lettuce, 7 oz of chicken, sliced roasted peppers and onions, one grilled jalapeno, 1 T each feta cheese and 1 T cilantro. Drizzle with ¼ of the dressing and serve immediately.