An experiment investigating the impact of micronutrients and bio-capsules on the quality of capsicum in protected conditions was conducted during the rabi seasons of 2022-23 and 2023-24 at the Horticulture Research Field, SHUATS, Naini, Prayagraj, U.P., within a Completely Randomized Design comprising 15 treatments with 3 replications. The results indicated that the treatment T₁₄ (consisting of a mixture of all micronutrients with bio-capsule) significantly improved various quality attributes, including total soluble solids (7.94 °Brix), ascorbic acid content (147.82 mg 100g^-1), and acidity (4.89%). Treatment T₁₄ emerged as the most effective, possibly due to the combined application of bio-capsules and micronutrients balancing the C:N ratio, resulting in enhanced nutrient availability and increased plant metabolism. This, in turn, led to greater carbohydrate accumulation in the fruit, consequently increasing total soluble solids and ascorbic acid levels. Treatment T₇ also showed promising results. Conversely, the control treatment (T₀) yielded the lowest values. The findings suggest that farmers can benefit from using a mixture of all micronutrients along with bio-capsules to enhance capsicum quality in protected conditions.