Place a jelly-roll pan in oven. Preheat broiler to high.
Combine tomatoes, garlic, shallots, red bell pepper, and poblano pepper in a bowl.
Add canola oil; toss. Carefully arrange vegetables on preheated pan; broil 10 minutes or until blackened.
Place roasted vegetables in a blender.
Remove center piece of blender lid (to allow steam to escape); secure lid on blender.
Place a clean towel over opening in lid (to avoid splatters). Blend until smooth. Stir in chicken stock, salt, cumin, and coriander. Top with cilantro leaves; serve with lime wedges.