I'm a chili novice, how can I make it better?

I'm on a weight loss journey and the turkey chili recipe was one of my favorites so far. Reason I liked it was it had flavor. A lot of the meals are protein with cooked vegetables.

How can I make it better?

Lean Turkey Chili (Makes ~4 servings)

Ingredients:

1 lb lean ground turkey

1 tbsp olive oil

1 medium onion, diced

2 cloves garlic, minced

1 bell pepper, diced

1 can (15 oz) black beans, drained and rinsed

1 can (15 oz) diced tomatoes (no added sugar)

1 tsp chili powder

1 tsp ground cumin

½ tsp paprika

Salt and pepper to taste

Optional: chopped cilantro, avocado slices, lime for garnish