Preheat oven to 350 degrees. In a small bowl, mix together chili powder, cumin, onion powder, garlic powder and sea salt. Place chicken on baking sheet and coat in olive oil or olive oil spray. Sprinkle seasoning on top of chicken and bake for 25 to 30 minutes or until fully cooked. Shred with a fork and knife. Season with more salt if needed. Preheat oven to 350 degrees. Spray large baking sheet with olive oil spray or grease with olive oil. Heat the corn tortillas in the microwave for about 30 seconds (or on a hot griddle until soft and pliable). Spoon about a tablespoon or so of beans and shredded cheese in the middle of the tortilla. Top with about 2 tbsp of shredded chicken and roll tightly. Secure taquito with a toothpick and place on a baking sheet seam side down. Repeat process until all tortillas are filled, rolled, secured and placed on the baking sheet. Spray the tops of the taquitos with olive oil or brush lightly with olive oil. Sprinkle with some sea salt. Bake in oven for 15 to 20 minutes, until edges of the taquitos are browned. Serve topped with chopped greens, cheese, sour cream, and your favorite salsa or dipping sauce.